2000 NSSDC Annual Report: Tables

Table 1.
Counts of NSSDC Data Sets and Data Set Sources as of 12/31/00

Discipline	Digital	Non-Digital	Totals	Experimiments with Data	Spacecraft with Data
Astronomy	233	112	345	129	40
Space/Solar Physics	1,482	1,060	2,542	793	189
Planetary	570	730	1,300	302	94
Earth	113	94	207	180	99
Other	44	144	188	12	0
Totals	2,442	2,140	4,582	1,416	422

Table 2.
State of the NSSDC Archive as of 12/31/00

Discipline	No. of Terabytes	No. of Terabytes Network-Accessible	No. of Media (Digital)*
Astro	5.0	1.68	4,075
Space Physics	8.3	1.60	21,896
Planetary	3.7	0	23,444
Earth	3.3	0	26,352**
Total	20.3	3.28	75,767
* See Table 4 for detail; not counted is large quantity of data on microfilm, microfiche, etc. ** Awaiting transfer to EOSDIS

Table 3a.
Astrophysics Data Electronically Accessible from NSSDC
as of December 31, 2000

Project	Online	Nearline
ADC	18 GB
Astro
HUT		0.6 GB
UIT		35
WUPPE		20
CGRO		1
COBE	21
GINGA		1
HEAO-1		13
HEAO-2		4
HEAO-3		1
HST		3
IRAS		84
IUE		1,395
NRAO		1
OGLE		43
ORFEUS		0.3
OSO 8		23
SWAS	0.8
Vela 5B		21
Totals	40GB	1,646 GB

Table 3b.
Space Physics Data Electronically Accessible from NSSDC
as of December 31, 2000

	Online		Nearline
	CDAWeb	Anon/FTP	NDADS
ACE	0.6 GB	2.9 GB
AE C,D,E		0.5
AEROS		0.1
ARCAD		0.9
CDAW 9	0.3
DE	20 **	0.3	209 GB
Equator-S	0.9		0.4
FAST	24		8
Geotail	9		*
GOES	1.4		0.5
Ground-based	5.6
Hawkeye	2.5		20
Helios 1&2		0.5
Hinotori		0.1
	Online		Nearline
	CDAWeb	Anon/FTP	NDADS
IMAGE	25	15.0
IMP 8	4.0	14.7 **	45
Interball	0.7		0.2
ISEE		0.5	9
ISIS 1&2	10 **	62.0 **	468
ISTP	*		170
LANL	4.3		2.4
MAGSAT		1.8
OMNI		0.2
Pioneer		0.5	1
Polar	162		*
Prognoz		0.2
Russian_MSU		0.6
SAMPEX	4.7 **		65
San Marco		0.2	0.1
Skylab			7
SOHO	0.5		0.3
Ulysses	3.9	4.5	24
Voyager		0.5	22
Wind	12	6.4	*
Yohkoh			253
Totals	291	112	1305
* Counting differences in CDAWeb and NDADS lead to grouping Wind, Polar, and Geotail as "ISTP" in the NDADS column. ** These are largely subsets of the NDADS holdings of the last column. 12 GB IMP data and all ISIS, DE and SAMPEX data of the first two columns are excluded from the total e-accessible data volume (in Table 2) to avoid double counting.

Table 4.
Counts of Volumes at NSSDC Archive as of 12/31/00

Media	Astro- physics	Space Physics	Planetary Science	Earth Science	Total
4-mm Tape	449	27	2	0	478
8-mm Tape	232	403	79	0	714
9-Track Tape	2,687	10,434	20,749	26,352	60,222
CD-ROM (Titles)	39	305	1,121	0	1,465
CD-WO	221	10,272	1,490	0	11,983
DVD	0	0	3	0	3
12" WORM (Offline)	0	56	0	0	56
12" WORM (NDADS)	288	208	0	0	496
M-O Disk	0	182	0	0	182
DLT	159	9	0	0	168
Totals	4,075	21,896	23,444	26,352	75,767
Backup volumes not included

Table 5.
Photographic Data Products at NSSDC by Discipline

Discipline	Micro- film	Micro- fiche	Film (feet)	Film (frames)	Reels	Slides
Astrophysics	6,020	18,524	100	63,459		121
Earth Science	1,430		4,200	236,066
Planetary Science	3,294	6,345	143,214	392,122	259	5
Space Physics	20,195	14,669	4,640	4,379		41,509
Communications	183
Other	162
Totals	31,284	39,538	152,154	696,026	259	41,535

Table 6.
Data Arriving at NSSDC During 2000

Astrophysics		Planetary		Space Physics
ADC	1.0 GB	Clementine	59.3 GB	ACE	11 GB
EUVE	88.6	Galileo	4.9	FAST	604
				IMAGE	40
FUSE	11.2	Magellan	13.4	IMP-8	5
HEAO 1	15.6	HST	2.9	ISEE	5
Wind	2.6	Lunar Prospector	1.4	ISIS	84
SWAS	0.8	Mars Global Surv’r	104.1	ISTP
				KP’s	135
				Geotail L0	174
				Polar L0	264
				Wind L0 +	42
				Helios	1.6
				SAMPEX	31
				Ulysses	6
				DE	8
				OV1-14, etc.	1.7
				SOLRAD	2.1

Subtotal	120	Subtotal	186	Subtotal	1414

Grand Total	1720
•26 new data sets from 20 experimentsbegan arriving in 2000 • First data from 10 experiments began arriving in 2000

Table 7.
Media Arriving at NSSDC During 2000

Media	Astro- Physics	Space Physics	Planetary Science	Total
4-mm Tape	0	4	0	4
8-mm Tape	11	0	0	11
9-Track Tape	0	9	0	9
CD-ROM (Titles)	0	105	212	317
CD-WO	37	1,996	82	2,115
Magneto-Optic Disk	0	24	0	24
DVD	0	0	3	3
DLT	5	0	0	5
Total	53	2,138	297	2,488

Table 8a.
Annual Access Statistics for Special Space Physics Systems

	1998	1999	2000
CDAWeb	58,786/23,483 *	68,127/26,558	88,642/35,267 ***
OMNIWeb	8,784/3,042	9,203/3,349	9,129/2,606
COHOWeb	1,005/650	1,299/468	1,144/202
ATMOWeb		2,774 **	1,715/525
* For first three rows, first member of each pair is the number of plots created. Second member is the sum of numerical screen listings plus user-created-ASCII files or CDF files downloaded. 1999 ATMOWeb count is number of executions of the ATMOWeb software yielding plots, listings, or ASCII files. The count is annualized based on August-December statistics. * Original entry here, also given in paper copies of Annual Report, was 88,642/57,566. It was subsequently recognized that a significant fraction of the 2nd number was due to routine and daily file extractions from CDAWeb by a University-based system providing access to these and other data. These extractions are deleted from the new number above.

Table 8b.
2000 Access Statistics to Geophysical Models and Ephemerides Services

Geophysical Models

International Reference Ionosphere	15,600
MSIS Atmospheric Model	12,027
International Geomagnetic Reference Field	19,460
(includes Corrected Geomagnetic Coordinate Transformations)

Tsyganenko 1989, 1996 Magnetic Field	1,935
Trapped Particles	3,000

Total, Geophysical Models	52,022

Satellite Situation Center/SSCWeb
(magnetosphere and near-magnetosphere spacecraft orbits)

Plots	14,937
Tabular and "Query"	7387

Total, SSCWeb	22,324
Heliocentric Spacecraft, Planets, Comets Orbits 6,278 These counts are software executions, yielding results for user-specified criteria. They do not include ftp-downloads of corresponding software

Table 9.
Number of Files Downloaded from ANON/FTP,
Excluding NDADS

	1997	1998	1999	2000
Photo_Gallery	59,000	504,000	1,381,000	1,918,000
Spacecraft_Data (= "COHO" through 1998)	11,000	10,000	113,000	76,000
All Others	114,000	151,000	229,000	290,000
Total	184,000	665,000	1,723,000	2,284,000

Table 10.
NDADS 2000 Access Stats - Missions with >10 Unique Sites
Accessing Data Monthly

		Number Requests	Mean Monthly E-addresses Accessing	Number Files
Astrophysics

	IRAS	268	11	1,599

Space Physics

	IMP 8	1,336	21	31,427
	ISTP	397	13	7,051

All Others		3,567		68,735

Grand Totals		5,568		108,776

Table 11.
NSSDC User Community (Offline Requests) [CY 2000]

Affiliation Category	Total Requests	Percent of Total
No Affiliation [GeneralPublic]	385	32.9
Non-US	424	36.1
US Universities/Colleges	131	11.2
US Private Industry	98	8.4
NASA/GSFC	46	3.9
NASA Centers, Excluding GSFC	31	2.7
Other Government Agencies	40	3.4
Miscellaneous	16	1.4
Total	1,171*	100
* Requests for 1,961 Milky Way posters and 719 COBE posters are not included in this total.

Table 12.
Number of Requests for Offline Satellite Data from NSSDC by Discipline *

Discipline	Data Set Requests 1968 - 2000	Offline Data Set Requests 2000
Astrophysics	10,932	302
Earth Science	7,130	2
Planetary Science	44,329	1,473
Space Physics	8,432	136
Ephemeris	87	1
Other	20	0
Total	70,930	1,914
* One request for all or parts of two distinct data sets adds two to these Table 12 statistics, but only one to the Table 11 statistics.

Table 13.
NSSDC Offline Data Dissemination Statistics as of December 31, 2000

Offline	1996	1997	1998	1999	2000
Number of Requests for Tapes	30	25	24	12	0*
Number of Tapes Mailed	401	428	925	66	0*
Number of Requests for CDs	1,233	1,297	1,079	1,013	632
Number of CDs Mailed	4,804	6,220	6,825	7,014	4,387
Number of Film Requests	177	192	300	230	240
Number of Film Volumes Mailed	1,733	2,383	2,353	1,520	6,573
* These rows are for digital tapes – 8-mm, 9-track, etc. In 2000, NSSDC distributed 231 video tapes in response to 168 distinct requests.

Table 14.
AIM Partition Statistics for CY 2000

	Number of Records	Number Added
Subpartition	as of 12/31/00	in 2000
Spacecraft	5,749	139
Experiment	5,025 *	40
Data Set	4,921 **	88
Totals	15,695	267
* decrease from prior year due to elimination of "-00" experiment records ** decrease from prior year due to elimination of duplicate records for multi-source data sets Number of spacecraft with experiments - 1,001 Number of experiments with data sets - 1,300

Table 15.
NSDF Partition Statistics for CY 2000

Discipline	Number of Data Sets
Astrophysics	1,038
Space Physics	441
Earth Science	65
Planetary	43
Other	29
Total	1,616

Table 16.
TRF Partition Statistics as of 12/31/00

Total Number of Records	42,090
Number of Records Inserted	816

Table 17.
IRAND Partition Statistics as of 12/31/00

Record Type	Total Records	Records Inserted	Records Updated
Personnel	56,527	826	3,756
Request	81,594	1,185

Table 1. Counts of NSSDC Data Sets and Data Set Sources as of 12/31/00

Table 2. State of the NSSDC Archive as of 12/31/00

Table 3a. Astrophysics Data Electronically Accessible from NSSDC as of December 31, 2000

Table 3b. Space Physics Data Electronically Accessible from NSSDC as of December 31, 2000

Table 4. Counts of Volumes at NSSDC Archive as of 12/31/00

Table 5. Photographic Data Products at NSSDC by Discipline

Table 6. Data Arriving at NSSDC During 2000

Table 7. Media Arriving at NSSDC During 2000

Table 8a. Annual Access Statistics for Special Space Physics Systems

Table 8b. 2000 Access Statistics to Geophysical Models and Ephemerides Services

Table 9. Number of Files Downloaded from ANON/FTP, Excluding NDADS

Table 10. NDADS 2000 Access Stats - Missions with >10 Unique Sites Accessing Data Monthly

Table 11. NSSDC User Community (Offline Requests) [CY 2000]

Table 12. Number of Requests for Offline Satellite Data from NSSDC by Discipline *

Table 13. NSSDC Offline Data Dissemination Statistics as of December 31, 2000

Table 14. AIM Partition Statistics for CY 2000

Table 15. NSDF Partition Statistics for CY 2000

Table 16. TRF Partition Statistics as of 12/31/00

Table 17. IRAND Partition Statistics as of 12/31/00