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LEVEL 2

Introduction
Naming Convention
Global Attributes
V Group

Introduction

OCTS Level 2 products are classified into three products the same as Level 1A products; GAC, LAC, and RTC. Each Level 2 product is divided into four subproducts:

ocean color 1,
ocean color 2,
vegetation indices and
sea surface temperature.

Ocean color 1 product stores following data.

Normalized water-leaving radiance at 412nm, 443nm, 490nm, 520nm, 565nm
Aerosol radiance at 670nm, 765nm, 865nm
epsilon (670_F865)
tau a at 865nm

Ocean color 2 product stores following data:

CZCS-like pigment concentration
Chlorophyll a concentration
Diffusion attenuation coefficient at 490 nm
Level 2 Quality flags

Vegetation indices product stores following data

Vegetation indices

Sea surface temperature product stores following data:

Sea surface temperature

Note that the data types in throughout this document are expressed with followings:

Ch character line
Short 2 byte integer (signed)
Ushort 2 byte integer (unsigned)
Long 4 byte integer (signed)
Ulong 4 byte integer (unsigned)
Real 4 byte real number
Double 8 byte real number
Byte 1 byte integer

Ch	character line
Short	2 byte integer (signed)
Ushort	2 byte integer (unsigned)
Long	4 byte integer (signed)
Ulong	4 byte integer (unsigned)
Real	4 byte real number
Double	8 byte real number
Byte	1 byte integer

Naming Convention

GAC	L2OC1G (Ocean color 1 product), L2OC2G (Ocean color 2 product), L2VIG(Vegetation indices product), L2STG(Sea surface temperature product)
LAC	L2OC1L (Ocean color 1 product), L2OC2L (Ocean color 2 product), L2VIL(Vegetation indices product), L2STL(Sea surface temperature product)
RTC	L2OC1R (Ocean color 1 product), L2OC2R (Ocean color 2 product), L2VIR(Vegetation indices product), L2STR(Sea surface temperature product)

Global Attributes

Structure of level 2 product

Scan-Line Attributes
msec
miss_qual
eng_qual
s_satp
pre
pxl
det
lat
lon

Converted Telemetry
sc_time
off_time
opr_mode
DSP_sys
tilt_flag
tilt
gain
SDE_sys
inst_temp
bb_temp
AMUX_v
const_i
sc_att

Navigation
orb_vec
orb_vel
sun_ref
att_ang

Sensor Tilt
tilt_seg

Spacecraft Time Error
num_inf
obit_count
start_time
end_time
period_count
ref_count
ref_time

Subsampling Table
num_tables
start_line
samp_table

Raw ADEOS Data
octs_tlm

Geophysical Data
nLw_412
nLw_443
nLw_490
nLw_520
nLw_565
La_670
La_765
La_865
eps_68
tau_865

CZCS_pigment
chlor_a
K_490
l2_flags

SST

Orbit Data
num_rec
precision
utc_tai
ut1r_tai
polar_motion
start_date
interval
num_points
sc_pos
sc_vel

Calibration

t_gain	t_offset
beta_d	beta_p
beta_am	beta_ad
beta_oam	beta_oad
ref_temp	eta
linearity_V	linearity_R
temp	rad
opt_vec	opt_a
mirror_e	scan_axis_e
scan_m_a	scan_ang
rad_tbl_size
rad_tbl	rad_coef

V group name (Tag = VG) V group class
refer Naming Convention CDF0.0

V group name (Tag = VG)	V group class
refer Naming Convention	CDF0.0

Mission and Documentation

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Product Name	1	Ch	7 / 6	refer Naming Convention	The name of the product file (without path)
Title	1	Ch	22	"OCTS Level-2 GAC Data"	GAC
				"OCTS Level-2 LAC Data"	LAC
				"OCTS Level-2 RTC Data"	RTC
Data Center	1	Ch	31	"NASDA/Earth Observation Center"	OCTS Data Processing Center (National Space Development Agency of Japan)
Station Name	1	Ch	31	"NASDA/Earth Observation Center"	OCTS Data Acquisition Center (only for RTC)
Station Latitude	1	Real	4		Lat. of Data Acq. Center (only for RTC)
Station Longitude	1	Real	4		Long. of Data Acq. Center (only for RTC)
Mission	1	Ch	11	"ADEOS OCTS"	Mission (satellite name and sensor name)
Mission Characteristics	1	Ch	189	"Nominal orbit: inclination = 98.59 (Sun-Synchronous); node = 10:15-10:45 AM (descending); eccentricity <= 0.0012; altitude = 797km; ground speed = 6.6km/sec; revolutions per day = 14+11/41"
Sensor	1	Ch	42	"Ocean Color and Temperature Scanner (OCTS)"
Sensor Characteristics	1	Ch	123	"Number of bands = 12; number of detectors per band = 10; bits per pixel = 10; scan period = 0.905sec; bit rate = 3Mbit/sec"
Data Type	1	Ch	4	"GAC"	GAC
				"LAC"	LAC
				"RTC"	RTC
Data Sub-type	1	Ch	14	"Ocean Color 1"
				14	"Ocean Color 2"
				19	"Vegetation Indices"
				24	"Sea Surface Temperature"
Replacement Flag	1	Ch	9	"ORIGINAL"	If this is the first version of this product delivered to the NASDA/EOC.
Software ID	1	Ch	4	"X Y"	Identities version of the operational software used to create this product. X : OCTS software version Y : OCTS database version
Processing Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Local time of generation of this product.
Processing Control	1	Ch	928	refer Process Product Order (OCTS)	All input and processing control parameters used by the calling program to generate the product.
Processing Log	1	Ch	728	refer Process Work Result (OCTS)	Processing status information.

Data Time

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Start Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the first scan line of the scene. (UT)
End Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the last scan line of the scene. (UT)
Scene Center Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the center scan line of the scene. (UT)
Node Crossing Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Descending node crossing time. (UT)
Start Year	1	Short	2		Year of first scan line of the scene.
Start Day	1	Short	2		Day-of-year first scan line of the scene.
Start Millisec	1	Long	4		Milliseconds-of-day of start of the first scan line of the scene.
End Year	1	Short	2		Year of last scan line of the scene.
End Day	1	Short	2		Day-of-year last scan line of the scene.
End Millisec	1	Long	4		Milliseconds-of-day of start of the last scan line of the scene.
Orbit Number	1	Long	4

Data Quality

[oc] : Ocean Color, [vi] : Vegetation Indices, [st] : Sea Surface Temperature

V data name
(Tag = VH) Nb of data Type Size
(bytes) Data (Tag = VS) Contents
Pixels per Scan Line 1 Long 4 Number of pixels per scan line. (= p)
Number of Scan Lines 1 Long 4 Number of scan lines in the scene.
Lines per Scan 1 Long 4 2 10 Number of lines per scan. GAC LAC, RTC
Missing Frames 1 Long 4 Missing frame (scan) count.
Flag Percentages 16:[oc]
6:[vi,st] Real 64:[oc]
24:[vi,st] In case of Ocean Color, percentages of pixels in the scene for which a bit in "l2_flags" is set, each of the 16 values corresponds to one of the 16 bits (from MSB to LSB) in "l2_flags". In case of Vegetation Indices and Sea Surface Temperature, percentages of pixels in the scene for which a bit in "VI" or "SST" is set, each of the 6 values corresponds to one of the 6 bits (from MSB) in "VI" or "SST'.

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Pixels per Scan Line	1	Long	4		Number of pixels per scan line. (= p)
Number of Scan Lines	1	Long	4		Number of scan lines in the scene.
Lines per Scan	1	Long	4	2 10	Number of lines per scan. GAC LAC, RTC
Missing Frames	1	Long	4		Missing frame (scan) count.
Flag Percentages	16:[oc] 6:[vi,st]	Real	64:[oc] 24:[vi,st]		In case of Ocean Color, percentages of pixels in the scene for which a bit in "l2_flags" is set, each of the 16 values corresponds to one of the 16 bits (from MSB to LSB) in "l2_flags". In case of Vegetation Indices and Sea Surface Temperature, percentages of pixels in the scene for which a bit in "VI" or "SST" is set, each of the 6 values corresponds to one of the 6 bits (from MSB) in "VI" or "SST'.

Scene Coordinates

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Latitude Units	1	Ch	14	"degrees North"	Units used for all lat. values in this product.
Longitude Units	1	Ch	13	"degrees East"	Units used for all long. values in this product.
Scene Center Latitude	1	Real	4		Latitude of the center point of the scene's center scan.
Scene Center Longitude	1	Real	4		Longitude of the center point of the scene's center scan.
Upper Left Latitude	1	Real	4		Latitude of the upper left scene corner.
Upper Left Longitude	1	Real	4		Longitude of the upper left scene corner.
Upper Right Latitude	1	Real	4		Latitude of the upper right scene corner.
Upper Right Longitude	1	Real	4		Longitude of the upper right scene corner.
Lower Left Latitude	1	Real	4		Latitude of the lower left scene corner.
Lower Left Longitude	1	Real	4		Longitude of the lower left scene corner.
Lower Right Latitude	1	Real	4		Latitude of the lower right scene corner.
Lower Right Longitude	1	Real	4		Longitude of the lower right scene corner.
Orbit Node Longitude	1	Real	4		Longitude of orbit descending node.
RSP path	1	Short	2		RSP path number of the scene's start.
Start argument of Latitude	1	Real	4		Argument of latitude of the scene's start.
End argument of Latitude	1	Real	4		Argument of latitude of the scene's end.

V Group

Scan-Line Attributes
Physical Quantity
Level 2 Quality Information
Raw ADEOS Data
Converted Telemetry
Navigation
Sensor Tilt
Calibration
Spacecraft Time Error
Orbit Data
Subsampling Table

Of the following nine V groups, five V groups, Scan-Line Attributes, Geophysical Data, Raw ADEOS Data, Converted Telemetry, and Navigation, contain data that are functions of scan lines. That is, each data object within these V groups have data for each scan line and is therefore dimensioned by the value of the global attribute, Number of Scan Lines. Thus, to get all the data corresponding to a specific scan line, n, the n the values of all data objects in these five V groups would need to be read.

Scan-Line Attributes

V group name (Tag = VG)	V group class
Scan-Line Attributes	Scan_Line_Data

[G] : GAC,[L] : LAC/RTC

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

n : Number of address calculating latitude and longitude (dimension of which V group name is "pxl")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
msec s "rec" "Scan-line time, milliseconds of day" valid_range = (0 , 86399999) Long 4xs Milliseconds of day.
miss_qual s "rec" "Missing frame flag" Ushort 2xs Flag indicating missing OCTS frame.
eng_qual s , 24 "rec", "flag" "Engineering data-out-of-range flags" Byte 24xs Flags indicating abnormal telemetry value.
pre s , 128 "rec", "pref" "Prefix data" Byte 128xs Prefix data of Level-0.
pxl n "pxls" "Column direction address of pixels" Short 2xn Column direction addresses of pixels calculating latitude and longitude.
det 1 "dets" "Detector number of pixels" valid_range = (1 , 10) Short 2 Detector number of pixels calculating latitude and longitude.
lat s , n "rec", "pxls" "Scan point latitude" valid_range = (-90 , 90) Real 4xnxs Latitude of above addressed pixels.
lon s , n "rec", "pxls" "Scan point longitude" valid_range = (-180 , 180) Real 4xnxs Longitude of above addressed pixels.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
msec	s	"rec"	"Scan-line time, milliseconds of day"	valid_range = (0 , 86399999)	Long	4xs	Milliseconds of day.
miss_qual	s	"rec"	"Missing frame flag"		Ushort	2xs	Flag indicating missing OCTS frame.
eng_qual	s , 24	"rec", "flag"	"Engineering data-out-of-range flags"		Byte	24xs	Flags indicating abnormal telemetry value.
pre	s , 128	"rec", "pref"	"Prefix data"		Byte	128xs	Prefix data of Level-0.
pxl	n	"pxls"	"Column direction address of pixels"		Short	2xn	Column direction addresses of pixels calculating latitude and longitude.
det	1	"dets"	"Detector number of pixels"	valid_range = (1 , 10)	Short	2	Detector number of pixels calculating latitude and longitude.
lat	s , n	"rec", "pxls"	"Scan point latitude"	valid_range = (-90 , 90)	Real	4xnxs	Latitude of above addressed pixels.
lon	s , n	"rec", "pxls"	"Scan point longitude"	valid_range = (-180 , 180)	Real	4xnxs	Longitude of above addressed pixels.

Physical Quantity

V group name (Tag = VG)	V group class
Geophysical Data	Data

Ocean Color 1

*1 : Refer Absolute Calibration Coefficients about absolute calibration coefficients (slope, intercept)

p : Number of pixels per line ("Pixels per Scan Line" of Data Quality in Global attributes)

l : Number of lines per scene = Number of scans x Number of detectors per scan ("Number of Scan Lines" x "Lines per Scan" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
nLw_412 l , p "lines", "nsamp" "Normalized water-leaving radiance at 412 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
nLw_443 l , p "lines", "nsamp" "Normalized water-leaving radiance at 443 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
nLw_490 l , p "lines", "nsamp" "Normalized water-leaving radiance at 490 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
nLw_520 l , p "lines", "nsamp" "Normalized water-leaving radiance at 520 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
nLw_565 l , p "lines", "nsamp" "Normalized water-leaving radiance at 565 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
La_670 l , p "lines", "nsamp" "Aerosol radiance at 670 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
La_765 l , p "lines", "nsamp" "Aerosol radiance at 765 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
La_865 l , p "lines", "nsamp" "Aerosol radiance at 865 nm" slope = *1 intercept = *1
units = "mW cm^-2 um^-1 sr^-1" Ushort 2xpxl
eps_68 l , p "lines", "nsamp" "Epsilon of aerosol correction at 670 and 865 nm" slope = *1 intercept = *1 Byte pxl
tau_865 l , p "lines", "nsamp" "Aerosol optical thickness at 865 nm" slope = *1 intercept = *1 Byte pxl

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)
nLw_412	l , p	"lines", "nsamp"	"Normalized water-leaving radiance at 412 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
nLw_443	l , p	"lines", "nsamp"	"Normalized water-leaving radiance at 443 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
nLw_490	l , p	"lines", "nsamp"	"Normalized water-leaving radiance at 490 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
nLw_520	l , p	"lines", "nsamp"	"Normalized water-leaving radiance at 520 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
nLw_565	l , p	"lines", "nsamp"	"Normalized water-leaving radiance at 565 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
La_670	l , p	"lines", "nsamp"	"Aerosol radiance at 670 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
La_765	l , p	"lines", "nsamp"	"Aerosol radiance at 765 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
La_865	l , p	"lines", "nsamp"	"Aerosol radiance at 865 nm"	slope = 1 intercept = 1 units = "mW cm^-2 um^-1 sr^-1"	Ushort	2xpxl
eps_68	l , p	"lines", "nsamp"	"Epsilon of aerosol correction at 670 and 865 nm"	slope = 1 intercept = 1	Byte	pxl
tau_865	l , p	"lines", "nsamp"	"Aerosol optical thickness at 865 nm"	slope = 1 intercept = 1	Byte	pxl

Ocean Color 2

*1 : Refer Absolute Calibration Coefficients about absolute calibration coefficients (slope, intercept)

p : Number of pixels per line ("Pixels per Scan Line" of Data Quality in Global attributes)

l : Number of lines per scan = Number of scans x Number of detectors per scan ("Number of Scan Lines" x "Lines per Scan" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
CZCS_pigment l , p "lines", "nsamp" "CZCS-like pigment concentration" slope = *1 intercept = *1
units = "mg m^-3" Ushort 2xpxl
chlor_a l , p "lines", "nsamp" "Chlorophyll a concentration" slope = *1 intercept = *1
units = "mg m^-3" Ushort 2xpxl
K_490 l , p "lines", "nsamp" "Diffuse attenuation coefficient at 490 nm" slope = *1 intercept = *1
units = "m^-1" Ushort 2xpxl
l2_flags l , p "lines", "nsamp" "Bit masks and flags" Ushort 2xpxl Level 2 quality information.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
CZCS_pigment	l , p	"lines", "nsamp"	"CZCS-like pigment concentration"	slope = 1 intercept = 1 units = "mg m^-3"	Ushort	2xpxl
chlor_a	l , p	"lines", "nsamp"	"Chlorophyll a concentration"	slope = 1 intercept = 1 units = "mg m^-3"	Ushort	2xpxl
K_490	l , p	"lines", "nsamp"	"Diffuse attenuation coefficient at 490 nm"	slope = 1 intercept = 1 units = "m^-1"	Ushort	2xpxl
l2_flags	l , p	"lines", "nsamp"	"Bit masks and flags"		Ushort	2xpxl	Level 2 quality information.

Level 2 Quality Information

Mask flag bit field definition of Ocean color

MSB

LSB

No. Item Mask /Flag Definition/Contents Name of Algorithm Binning
0 Absorptive Aerosol Flag e (565/670) < 1.0 : 1 AEROSOL1 Yes
1 Low Lw(565) Flag nLw(565) < 0.21 : 1 LOWLW1 No
2 High Ta(865) Flag ta(865) > 1.0 : 1 HIGHTAU1 No
3 Solar Zenith Angle Flag Solar zenith angle > 70 deg.: 1 SOLZEN1 No
4 Turbid Case2 Flag Rrs(565) > (1-0.02)Rlim(565)/ (3.42*1.34^2) : 1 TURBIDW1 Yes
5 Coccolithophore Flag Coccolithophore blooming COCCOLITH1 No
6 Cloud / Ice Mask nLa(865) > 0.97 : 1 CLDICE1 No
7 Incomplete Band Set Mask Off scan : 1 INCPLTSET1 No
8 Negative Lw Mask Lw < 0 : 1 NEGLW1 No
9 Bathymetry Flag Depth of water < 30 m : 1 COASTZ1 Yes
10 S/C Zenith Angle Flag S/C zenith angle > |45 deg.| : 1 SATZEN1 No
11 Bright Target Flag Noise of electrical interference BRIGHT1 No
12 Glint Mask Sum glint Lg(865) > 0.005*F0(865) : 1 SUNGLINT1 No
13 Near Cloud Flag Ringing and illegal value at near cloud ( nLa(865) > 0.75 ) : 1 NEARCLOUD1 No
14 Land Mask Land : 1 LAND1 No
15 Atmos. Corr. Fail. Mask e(670/865) > 2.0 : 1 EPSILON1 No

No.	Item	Mask /Flag	Definition/Contents	Name of Algorithm	Binning
0	Absorptive Aerosol	Flag	e (565/670) < 1.0 : 1	AEROSOL1	Yes
1	Low Lw(565)	Flag	nLw(565) < 0.21 : 1	LOWLW1	No
2	High Ta(865)	Flag	ta(865) > 1.0 : 1	HIGHTAU1	No
3	Solar Zenith Angle	Flag	Solar zenith angle > 70 deg.: 1	SOLZEN1	No
4	Turbid Case2	Flag	Rrs(565) > (1-0.02)Rlim(565)/ (3.42*1.34^2) : 1	TURBIDW1	Yes
5	Coccolithophore	Flag	Coccolithophore blooming	COCCOLITH1	No
6	Cloud / Ice	Mask	nLa(865) > 0.97 : 1	CLDICE1	No
7	Incomplete Band Set	Mask	Off scan : 1	INCPLTSET1	No
8	Negative Lw	Mask	Lw < 0 : 1	NEGLW1	No
9	Bathymetry	Flag	Depth of water < 30 m : 1	COASTZ1	Yes
10	S/C Zenith Angle	Flag	S/C zenith angle > \|45 deg.\| : 1	SATZEN1	No
11	Bright Target	Flag	Noise of electrical interference	BRIGHT1	No
12	Glint	Mask	Sum glint Lg(865) > 0.005*F0(865) : 1	SUNGLINT1	No
13	Near Cloud	Flag	Ringing and illegal value at near cloud ( nLa(865) > 0.75 ) : 1	NEARCLOUD1	No
14	Land	Mask	Land : 1	LAND1	No
15	Atmos. Corr. Fail.	Mask	e(670/865) > 2.0 : 1	EPSILON1	No

Masking
Ocean Color 1 : If mask bit is on, nLw and La are written level 1B data, and e and t are written zero.
Ocean Color 2 : Even if mask bit is on, the pixel data is written zero.
Flagging
Even if flag bit is on, the pixel data is written calculated value.
Binning
binning = Yes : Even if mask/flag bit is on, the pixel data is used by binning.
binning = No : If mask/flag bit is on, the pixel data is not used by binning.
Mapping
If mask bit is on, the pixel data is dealt with zero.
Vegetation Indices

*1 : Refer Absolute Calibration Coefficients about absolute calibration coefficients (slope, intercept)

p : Number of pixels per line ("Pixels per Scan Line" of Data Quality in Global attributes)

l : Number of lines per scan = Number of scans x Number of detectors per scan ("Number of Scan Lines" x "Lines per Scan" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
VI l , p "lines", "nsamp" "Vegetation index" slope = *1 intercept = *1 Ushort 2xpxl

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
VI	l , p	"lines", "nsamp"	"Vegetation index"	slope = 1 intercept = 1	Ushort	2xpxl

Mask flag bit field definition of Vegetation indices

MSB

LSB

No. Item Mask /Flag Definition/Contents Name of Algorithm Binning
0 Off scan Mask Off scan : 1 INCPLTSET1 No
1 Ocean/Land Mask ocean:1, land:0 OCEAN1 No
2 Scan angle Mask Scan angle > 30 deg. : 1 SCANANG1 No
3 Gain Mask All of band 6, 7, 8 are land gain : 1 OCEANGAIN1 No
4 Saturation Flag Each of band 6, 7, 8 is saturated : 1 SATURATE1 No
5 Transient response Flag Range of front x pixels to behind y pixels for high radiance object : 1 BRIGHT1 No
6_15 Data (vegetation indices)

No.	Item	Mask /Flag	Definition/Contents	Name of Algorithm	Binning
0	Off scan	Mask	Off scan : 1	INCPLTSET1	No
1	Ocean/Land	Mask	ocean:1, land:0	OCEAN1	No
2	Scan angle	Mask	Scan angle > 30 deg. : 1	SCANANG1	No
3	Gain	Mask	All of band 6, 7, 8 are land gain : 1	OCEANGAIN1	No
4	Saturation	Flag	Each of band 6, 7, 8 is saturated : 1	SATURATE1	No
5	Transient response	Flag	Range of front x pixels to behind y pixels for high radiance object : 1	BRIGHT1	No
6_15	Data (vegetation indices)

Masking and flagging
If off scan mask bit is on, the pixel data is written zero. Even if others mask/flag bit is on, the pixel data is written calculated value.
Binning
If any mask/flag bit is on, the pixel data is not used by binning.
Mapping
If mask bit is on, the pixel data is dealt with zero.
Sea Surface Temperature

*1 : Refer Absolute Calibration Coefficients about absolute calibration coefficients (slope, intercept)

p : Number of pixels per line ("Pixels per Scan Line" of Data Quality in Global attributes)

l : Number of lines per scan = Number of scans x Number of detectors per scan ("Number of Scan Lines" x "Lines per Scan" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
SST l , p "lines", "nsamp" "Sea surface temperature" slope = *1 intercept = *1
units = "kelvin" Ushort 2xpxl

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
SST	l , p	"lines", "nsamp"	"Sea surface temperature"	slope = 1 intercept = 1 units = "kelvin"	Ushort	2xpxl

Mask flag bit field definition of Sea Surface Temperature

No.	Item	Mask /Flag	Definition/Contents	Name of Algorithm	Binning
0	Off scan	Mask	Off scan	INCPLTSET1	No
1	Land/Ocean	Mask	land:1, ocean:0	LAND1	No
2	Cloud	Mask	SST-TBB11 > 10K or TBB11-TBB12 > 0 : 1	IRCLOUD1	No
3	Sea surface effect	Flag	Wind speed <= 4 m/sec : 1	SURFWIND1	No
4	Emission Angle	Flag	(dummy) 0 fixed	EMIANG1	No
5	QC	Flag	\|SST - weather data\| > 10K : 1	SSTQC1	Yes
6_15	Data (sea surface temperature)

Masking and flagging
If off scan mask bit is on, the pixel data is written zero.
Even if others mask/flag bit is on, the pixel data is written calculated value.
Binning binning = Yes : Even if mask/flag bit (that is QC flag) is on , the pixel data is used by binning.
binning = No : If any mask/flag bit is on, the pixel data is not used by binning.
Mapping
If mask bit is on, the pixel data is dealt with zero.

Raw ADEOS Data

V group name (Tag = VG)	V group class
Raw ADEOS Data	Scan_Line_Data

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
octs_tlm s , 120 "rec", "instr" "OCTS instrument telemetry" Ushort 240xs Raw telemetry data in OCTS frame.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
octs_tlm	s , 120	"rec", "instr"	"OCTS instrument telemetry"		Ushort	240xs	Raw telemetry data in OCTS frame.

Converted Telemetry

V group name (Tag = VG)	V group class
Converted Telemetry	Scan_Line_Data

[v] : Ocean Color 1, 2, Vegetation Indices (Visible and Near-infrared), [t] : Sea Surface Temperature (Thermal-infrared)

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
sc_time s "rec" "Spacecraft time" Ulong 4xs Spacecraft time counter value.
off_time s "rec" "Offset time of scan" Ushort 2xs Scan time offset value. ($B&$(BT)
opr_mode s "rec" "Operation mode" valid_range = (0 , 4) Ushort 2xs Observation mode. (DSP status) (observation; OBS = 0, lamp1; LAM = 1, lamp2; LAM = 2, solar; SOL = 3, electronic; ELE = 4)
DSP_sys s "rec" "DSP system" valid_range = (2 , 4) Ushort 2xs DSP A/B status (A=2, B=4)
tilt_flag s "rec" "Tilt angle flag of DSP status" valid_range = (1 , 4) Ushort 2xs Tilt angle (DSP status : +20 = 1, 0 = 2, -20 = 4)
tilt s "rec" "Tilt angle for scan line" valid_range = (-20 , 20) Real 4xs Tilt angle (degrees)
gain 8 , s : [v]
4 , s : [t] "bands", "rec" "Band gain settings" valid_range = (0 , 3) : [v]
(0 , 2) : [t] Ushort 16xs : [v]
8xs : [t] Gain setting (O/N = 0, L/N = 1, O/H = 2, L/H = 3, G1 = 0, G2 = 1, G3 = 2)
SDE_sys s "rec" "SDE system" valid_range = (1 , 2) Ushort 2xs SDE (Scan Drive Electronic) system (A = 1, B = 2)
inst_temp s , 4 "rec", "instt" "Instrument temperature telemetry" units = "degrees" Real 16xs Temperature of OCTS instrument (Optical processing cover temp., Thermal infrared detector temp.(detail), SRU temp.2, SRU temp.1)
bb_temp s , 5 "rec", "bbt" "Black body temperature telemetry" units = "degrees" Real 20xs Black body temperature. (standard black body temperature 1 - 5)
AMUX_v s "rec" "Analog multiplexer voltage" units = "voltages" Real 4xs Analog multiplexer voltage.
const_i s "rec" "Constant current calibration signal units = "voltages" Real 4xs Constant current calibration signal.
sc_att s , 3 "rec", "vec" "Spacecraft attitude roll, pitch, yaw" valid_range = (-180 , 180)
units = "degrees" Real 12xs Attitude angle. (roll, pitch, yaw)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
sc_time	s	"rec"	"Spacecraft time"		Ulong	4xs	Spacecraft time counter value.
off_time	s	"rec"	"Offset time of scan"		Ushort	2xs	Scan time offset value. ($B&$(BT)
opr_mode	s	"rec"	"Operation mode"	valid_range = (0 , 4)	Ushort	2xs	Observation mode. (DSP status) (observation; OBS = 0, lamp1; LAM = 1, lamp2; LAM = 2, solar; SOL = 3, electronic; ELE = 4)
DSP_sys	s	"rec"	"DSP system"	valid_range = (2 , 4)	Ushort	2xs	DSP A/B status (A=2, B=4)
tilt_flag	s	"rec"	"Tilt angle flag of DSP status"	valid_range = (1 , 4)	Ushort	2xs	Tilt angle (DSP status : +20 = 1, 0 = 2, -20 = 4)
tilt	s	"rec"	"Tilt angle for scan line"	valid_range = (-20 , 20)	Real	4xs	Tilt angle (degrees)
gain	8 , s : [v] 4 , s : [t]	"bands", "rec"	"Band gain settings"	valid_range = (0 , 3) : [v] (0 , 2) : [t]	Ushort	16xs : [v] 8xs : [t]	Gain setting (O/N = 0, L/N = 1, O/H = 2, L/H = 3, G1 = 0, G2 = 1, G3 = 2)
SDE_sys	s	"rec"	"SDE system"	valid_range = (1 , 2)	Ushort	2xs	SDE (Scan Drive Electronic) system (A = 1, B = 2)
inst_temp	s , 4	"rec", "instt"	"Instrument temperature telemetry"	units = "degrees"	Real	16xs	Temperature of OCTS instrument (Optical processing cover temp., Thermal infrared detector temp.(detail), SRU temp.2, SRU temp.1)
bb_temp	s , 5	"rec", "bbt"	"Black body temperature telemetry"	units = "degrees"	Real	20xs	Black body temperature. (standard black body temperature 1 - 5)
AMUX_v	s	"rec"	"Analog multiplexer voltage"	units = "voltages"	Real	4xs	Analog multiplexer voltage.
const_i	s	"rec"	"Constant current calibration signal	units = "voltages"	Real	4xs	Constant current calibration signal.
sc_att	s , 3	"rec", "vec"	"Spacecraft attitude roll, pitch, yaw"	valid_range = (-180 , 180) units = "degrees"	Real	12xs	Attitude angle. (roll, pitch, yaw)

Navigation

V group name (Tag = VG)	V group class
Navigation	Scan_Line_Data

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
orb_vec s , 3 "rec", "vec" "Orbit position vector at scan line time in ECR" valid_range = (-7200 , 7200)
units = "kilometers" Real 12xs Orbit position vector in ECR X, Y, Z
orb_vel s , 3 "rec", "vec" "Orbit velocity at scan line time in ECR" valid_range = (-8 , 8)
units = "kilometers second^-1" Real 12xs Spacecraft velocity vector in ECR frame.
sun_ref s , 3 "rec", "vec" "Reference Sun vector in ECR frame" Real 12xs Sun vector in the ECR frame.
att_ang s , 3 "rec", "vec" "Computed roll, pitch, yaw" valid_range = (-180 , 180)
units = "degrees" Real 12xs Attitude angle. (roll, pitch, yaw)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
orb_vec	s , 3	"rec", "vec"	"Orbit position vector at scan line time in ECR"	valid_range = (-7200 , 7200) units = "kilometers"	Real	12xs	Orbit position vector in ECR X, Y, Z
orb_vel	s , 3	"rec", "vec"	"Orbit velocity at scan line time in ECR"	valid_range = (-8 , 8) units = "kilometers second^-1"	Real	12xs	Spacecraft velocity vector in ECR frame.
sun_ref	s , 3	"rec", "vec"	"Reference Sun vector in ECR frame"		Real	12xs	Sun vector in the ECR frame.
att_ang	s , 3	"rec", "vec"	"Computed roll, pitch, yaw"	valid_range = (-180 , 180) units = "degrees"	Real	12xs	Attitude angle. (roll, pitch, yaw)

Sensor Tilt

V group name (Tag = VG)	V group class
Sensor Tilt	Scan_Line_Data

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
tilt_seg 1 "tilts" "Tilt segment number" valid_range = (1 , 5) Short 2 Tilt segment number.
1 : tilt angle = 0 degree (northern),
2 : tilt angle = -20 degrees,
3 : tilt angle = 20 degrees,
4 : tilt angle = 0 degree (southern)
5 : calibration data / nighttime observation data

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
tilt_seg	1	"tilts"	"Tilt segment number"	valid_range = (1 , 5)	Short	2	Tilt segment number. 1 : tilt angle = 0 degree (northern), 2 : tilt angle = -20 degrees, 3 : tilt angle = 20 degrees, 4 : tilt angle = 0 degree (southern) 5 : calibration data / nighttime observation data

Calibration

V group name (Tag = VG)	V group class
Calibration	Parameter

[v] : Ocean Color 1, 2, Vegetation Indices (Visible and Near-infrared), [t] : Sea Surface Temperature (Thermal-infrared)

k : Size of Radiance-temperature conversion table (dimension of which V group name is "temp")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
t_gain 4 , 8 , 10 "gains", "bands", "detectors" "Total gain" units = "W^-1 m^2 um sr" Real 1280 OCTS total gain at each gain setting. (only for Visible and near infrared)
t_offset 4 , 8 , 10 "gains", "bands", "detectors" "Total offset" units = "digital counts" Real 1280 OCTS total offset.
beta_d 8 , 10 : [v]
4 , 10 : [t] "bands", "detectors" "Temperature correction coefficients beta d" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bd
beta_p 8 , 10 : [v]
4 , 10 : [t] "bands", "detectors" "Temperature correction coefficients beta p" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bp
beta_am 8 , 10 : [v]
4 , 10 : [t] "bands", "detectors" "Temperature correction coefficients beta am" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bam
beta_ad 4 , 8 : [v]
3 , 4 : [t] "gains", "bands" "Temperature correction coefficients beta ad" units = "kelvin^-1" Real 128 : [v]
48 : [t] Temperature correction coefficient bad
beta_oam 8 , 10 : [v]
4 , 10 : [t] "bands", "detectors" "Temperature correction coefficients beta Oam" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bOam
beta_oad 4 , 8 : [v]
3 , 4 : [t] "gains", "bands" "Temperature correction coefficients beta Oad" units = "kelvin^-1" Real 128 : [v]
48 : [t] Temperature correction coefficient bOad
ref_temp 1 "reft" "Reference temperature for temperature correction coefficients" units = "celsius" Real 4 Standard temperature of temperature correction coefficient.
eta 8 : [v]
4 : [t] "bands" "Reflecting ratio correction coefficients" Real 32 : [v]
16 : [t] Reflecting ratio correction coefficient of reflecting mirror.
linearity_V 4 , 10 , 20 "bands", "detectors", "tdatas" "Output voltage of thermal infrared linearity table" units = "voltage" Real 3200 Output voltage of Thermal infrared non-linearity table. (only for Thermal infrared)
linearity_R 4 , 10 , 20 "bands", "detectors", "tdatas" "Input radiance of thermal infrared linearity table" units = "W^-1 m^2 um sr" Real 3200 Input radiance of Thermal infrared non-linearity table. (only for Thermal infrared)
temp k "rdatas" "Radiance-temperature conversion table temperature" units = "kelvin" Real 16xk Radiance-temperature conversion table temperature. (only for Thermal infrared)
rad 4 , k "bands", "rdatas" "Radiance-temperature conversion table radiance" units = "W m^-2 um^-1 sr^-1" Real 16xk Radiance-temperature conversion table radiance. (only for Thermal infrared)
opt_vec 8 , 10 , 3 : [v]
4 , 10 , 3 : [t] "bands", "detectors", "vec" "View vector at optical unit" valid range = (-1 , 1) Real 960 : [v]
480 : [t] View line of each detector at optical unit.
opt_a 3 , 3 "mat", "vec" "Alignment matrix of OPT coordinates" valid range = (-1 , 1) Real 36 Alignment of optical unit coordinate. (convert to satellite coordinate system by multiplying)
mirror_e 1 "err" "Scan mirror mounting error" units = "sec" Real 4 Mounting error of scan mirror. (asec)
scan_axis_e 1 "err" "Scan axis mounting error" units = "sec" Real 4 Mounting error of scan axis. (asec)
scan_m_a 3 , 3 "mat", "vec" "Alignment matrix of SMA coordinates" Real 36 Alignment of scan mechanism module. (convert to satellite coordinate system by multiplying)
scan_ang 2222 "pixels" "Scan rotation angle" Real 8888 Scan rotation angle of each detector.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
t_gain	4 , 8 , 10	"gains", "bands", "detectors"	"Total gain"	units = "W^-1 m^2 um sr"	Real	1280	OCTS total gain at each gain setting. (only for Visible and near infrared)
t_offset	4 , 8 , 10	"gains", "bands", "detectors"	"Total offset"	units = "digital counts"	Real	1280	OCTS total offset.
beta_d	8 , 10 : [v] 4 , 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta d"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bd
beta_p	8 , 10 : [v] 4 , 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta p"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bp
beta_am	8 , 10 : [v] 4 , 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta am"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bam
beta_ad	4 , 8 : [v] 3 , 4 : [t]	"gains", "bands"	"Temperature correction coefficients beta ad"	units = "kelvin^-1"	Real	128 : [v] 48 : [t]	Temperature correction coefficient bad
beta_oam	8 , 10 : [v] 4 , 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta Oam"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bOam
beta_oad	4 , 8 : [v] 3 , 4 : [t]	"gains", "bands"	"Temperature correction coefficients beta Oad"	units = "kelvin^-1"	Real	128 : [v] 48 : [t]	Temperature correction coefficient bOad
ref_temp	1	"reft"	"Reference temperature for temperature correction coefficients"	units = "celsius"	Real	4	Standard temperature of temperature correction coefficient.
eta	8 : [v] 4 : [t]	"bands"	"Reflecting ratio correction coefficients"		Real	32 : [v] 16 : [t]	Reflecting ratio correction coefficient of reflecting mirror.
linearity_V	4 , 10 , 20	"bands", "detectors", "tdatas"	"Output voltage of thermal infrared linearity table"	units = "voltage"	Real	3200	Output voltage of Thermal infrared non-linearity table. (only for Thermal infrared)
linearity_R	4 , 10 , 20	"bands", "detectors", "tdatas"	"Input radiance of thermal infrared linearity table"	units = "W^-1 m^2 um sr"	Real	3200	Input radiance of Thermal infrared non-linearity table. (only for Thermal infrared)
temp	k	"rdatas"	"Radiance-temperature conversion table temperature"	units = "kelvin"	Real	16xk	Radiance-temperature conversion table temperature. (only for Thermal infrared)
rad	4 , k	"bands", "rdatas"	"Radiance-temperature conversion table radiance"	units = "W m^-2 um^-1 sr^-1"	Real	16xk	Radiance-temperature conversion table radiance. (only for Thermal infrared)
opt_vec	8 , 10 , 3 : [v] 4 , 10 , 3 : [t]	"bands", "detectors", "vec"	"View vector at optical unit"	valid range = (-1 , 1)	Real	960 : [v] 480 : [t]	View line of each detector at optical unit.
opt_a	3 , 3	"mat", "vec"	"Alignment matrix of OPT coordinates"	valid range = (-1 , 1)	Real	36	Alignment of optical unit coordinate. (convert to satellite coordinate system by multiplying)
mirror_e	1	"err"	"Scan mirror mounting error"	units = "sec"	Real	4	Mounting error of scan mirror. (asec)
scan_axis_e	1	"err"	"Scan axis mounting error"	units = "sec"	Real	4	Mounting error of scan axis. (asec)
scan_m_a	3 , 3	"mat", "vec"	"Alignment matrix of SMA coordinates"		Real	36	Alignment of scan mechanism module. (convert to satellite coordinate system by multiplying)
scan_ang	2222	"pixels"	"Scan rotation angle"		Real	8888	Scan rotation angle of each detector.

Spacecraft Time Error

V group name (Tag = VG)	V group class
Spacecraft Time Error	Ephemeris_Data

n : Number of time error information sets (value of which V group name is "num_inf")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_inf 1 "ninf" "Number of time difference data" Short 2 Number of time error collection information sets (= n)
obit_count n "ndatas" "Orbit accumulation number" Long 4xn Integrated orbit number used in calculation.
start_time n "ndatas22" "Start time of time difference data" Ch 22xn Valid period of time error collection information (start) "YYYYMMDD hh:mm:ss.ttt"
end_time n "ndatas22" "End time of time difference data" Ch 22xn Valid period of time error collection information (end) "YYYYMMDD hh:mm:ss.ttt"
period_count n "ndatas14" "Counter period of SC clock" Ch 14xn Period of spacecraft counter "NN.NNNNNNNNNN"
ref_count n "ndatas12" "Reference counter of SC clock" Ch 12xn Reference spacecraft time counter value. "NNNNNNNNNNN"
ref_time n "ndatas22" "Reference time (UT) of ground" Ch 22xn Reference time. (UTC) "YYYYMMDD hh:mm:ss.ttt"

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_inf	1	"ninf"	"Number of time difference data"	Short	2	Number of time error collection information sets (= n)
obit_count	n	"ndatas"	"Orbit accumulation number"	Long	4xn	Integrated orbit number used in calculation.
start_time	n	"ndatas22"	"Start time of time difference data"	Ch	22xn	Valid period of time error collection information (start) "YYYYMMDD hh:mm:ss.ttt"
end_time	n	"ndatas22"	"End time of time difference data"	Ch	22xn	Valid period of time error collection information (end) "YYYYMMDD hh:mm:ss.ttt"
period_count	n	"ndatas14"	"Counter period of SC clock"	Ch	14xn	Period of spacecraft counter "NN.NNNNNNNNNN"
ref_count	n	"ndatas12"	"Reference counter of SC clock"	Ch	12xn	Reference spacecraft time counter value. "NNNNNNNNNNN"
ref_time	n	"ndatas22"	"Reference time (UT) of ground"	Ch	22xn	Reference time. (UTC) "YYYYMMDD hh:mm:ss.ttt"

Orbit Data

V group name (Tag = VG)	V group class
Orbit Data	Ephemeris_Data

m : Number of orbit records (value of which V group name is "num_rec")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_rec 1 "nrec" "Number of records" Long 4 Number of orbit data records. (= m)
precision m "odatas" "Orbit data precision" Short 2xm Precision of orbit data. (preliminary / decision)
utc_tai m "odatas" "UTC-TAI" units = "seconds" Long 4xm UTC - TAI
ut1r_tai m "odatas" "UT1R-TAI" units = "seconds" Double 8xm UT1R - TAI
polar_motion m , 2 "odatas", "pairs" "Polar motion parameters" Double 16xm Polar motion data. Xpm and Ypm (asec)
start_date m "odatas22" "Orbit data start date" Ch 22xm Start time of orbit data. "YYYYMMDD hh:mm:ss.000"
interval m "odatas" "Data interval time" units = "seconds" Double 8xm Data interval.
num_points m "odatas" "Number of data points" Long 4xm Number of data points. (= 1440)
sc_pos m , 1440 , 3 "odatas", "points", "vec" "Spacecraft position" valid range = (-7200 , 7200)
units = "kilometers" Double 34560xm Spacecraft position vector in ECI frame.
sc_vel m , 1440 , 3 "odatas", "points", "vec "Spacecraft velocity" valid range = (-8 , 8)
units = "kilometers second^-1" Double 34560xm Spacecraft velocity vector in ECI frame.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_rec	1	"nrec"	"Number of records"		Long	4	Number of orbit data records. (= m)
precision	m	"odatas"	"Orbit data precision"		Short	2xm	Precision of orbit data. (preliminary / decision)
utc_tai	m	"odatas"	"UTC-TAI"	units = "seconds"	Long	4xm	UTC - TAI
ut1r_tai	m	"odatas"	"UT1R-TAI"	units = "seconds"	Double	8xm	UT1R - TAI
polar_motion	m , 2	"odatas", "pairs"	"Polar motion parameters"		Double	16xm	Polar motion data. Xpm and Ypm (asec)
start_date	m	"odatas22"	"Orbit data start date"		Ch	22xm	Start time of orbit data. "YYYYMMDD hh:mm:ss.000"
interval	m	"odatas"	"Data interval time"	units = "seconds"	Double	8xm	Data interval.
num_points	m	"odatas"	"Number of data points"		Long	4xm	Number of data points. (= 1440)
sc_pos	m , 1440 , 3	"odatas", "points", "vec"	"Spacecraft position"	valid range = (-7200 , 7200) units = "kilometers"	Double	34560xm	Spacecraft position vector in ECI frame.
sc_vel	m , 1440 , 3	"odatas", "points", "vec	"Spacecraft velocity"	valid range = (-8 , 8) units = "kilometers second^-1"	Double	34560xm	Spacecraft velocity vector in ECI frame.

Subsampling Table

Only for GAC. Not including for RTC and LAC

V group name (Tag = VG) V group class
Subsampling Table Sub_Sampling_Data

V group name (Tag = VG)	V group class
Subsampling Table	Sub_Sampling_Data

n : Number of subsampling table (value of which V group name is "num_tables")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_tables 1 "ntbl" "Number of subsampling tables" Short 2 Number of subsampling tables (=n) (only for GAC)
start_line n "sline" "Start scan line of table" Short 2xn Start scan line number of subsampling tables (n) (only for GAC)
samp_table n, 3, 8, 2, p, 2 : [v]
n, 3, 4, 2, p, 2 : [t] "sets", "ntilt", "bands", "sdet", "nsamp", "pairs" "Subsampling table" Short 192xpxn : [v]
96xpxn : [t] Subsampling tables (only for GAC)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_tables	1	"ntbl"	"Number of subsampling tables"	Short	2	Number of subsampling tables (=n) (only for GAC)
start_line	n	"sline"	"Start scan line of table"	Short	2xn	Start scan line number of subsampling tables (n) (only for GAC)
samp_table	n, 3, 8, 2, p, 2 : [v] n, 3, 4, 2, p, 2 : [t]	"sets", "ntilt", "bands", "sdet", "nsamp", "pairs"	"Subsampling table"	Short	192xpxn : [v] 96xpxn : [t]	Subsampling tables (only for GAC)

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