1999 NSSDC Annual Report: Tables

Table 1.
Counts of NSSDC Data Sets and Data Set Sources as of 12/31/99

Discipline	Digital	Non-Digital	Totals	Experimiments with Data	Spacecraft with Data
Astronomy	227	112	339	128	39
Space/Solar Physics	1,471	1,059	2,530	788	189
Planetary	562	730	1,292	298	93
Earth	113	94	207	180	99
Other	44	144	188	12	0
Totals	2,417	2,139	4,556	1,406	420

Table 2.
State of the NSSDC Archive as of 12/31/99

Discipline	No. of Terabytes	No. of Terabytes Network-Accessible	No. of Media (Digital)*
Astro	4.9	1.68	4,022
Space Physics	6.9	1.35	19,758
Planetary	3.5	0	23,147
Earth	3.3	0	26,352**
Total	18.6	3.03	73,279
* 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, 1999

Project	Online	Nearline
ADC	17 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
Vela 5B		21
Totals	38 GB	1,646 GB

Table 3b.
Space Physics Data Electronically Accessible from NSSDC
as of December 31, 1999

	Online		Nearline
	CDAWeb	Anon/FTP	NDADS
ACE	0.3 GB
AE C,D,E		0.51 GB
AEROS		0.01
ARCAD		0.88
CDAW 9	0.05
DE	18	0.24	209 GB
Equator-S	0.5		0.4
FAST	21		8
Geotail	3.8		*
GOES	0.7		0.5
Ground-bsd	2.2
Hawkeye			20
Helios 1&2		0.03
Hinotori		0.14
	Online		Nearline
	CDAWeb	Anon/FTP	NDADS
IMP 8	0.5	0.32	43
Interball	0.3		0.2
ISEE			9
ISIS 1&2	7		384
ISTP	*		168
LANL	2.8		2.4
OMNI		0.25
Pioneer 10&11		0.41	1
PVO		0.03
Polar	82		*
Russian_MSU		0.56
SAMPEX	3.1		46
San Marco		0.15	0.1
Skylab			7
SOHO	0.32		0.3
Ulysses	1.7	1.58	24
Voyager 1&2		0.52	22
Wind	2.9		*
Yohkoh			253
Totals	150	5.63	1198
* Counting differences in CDAWeb and NDADS lead to grouping Wind, Polar, and Geotail as "ISTP" in the NDADS column.

Table 4.
Counts of Volumes at NSSDC Archive as of 12/31/99

Media	Astro- physics	Space Physics	Planetary Science	Earth Science	Total
4-mm Tape	449	23	2	0	474
8-mm Tape	221	403	79	0	703
9-Track Tape	2,687	10,425	20,749	26,352	60,213
CD-ROM (Titles)	39	200	909	0	1,148
CD-WO	184	8,276	1,405	0	9,868
12" WORM (Offline)	0	56	0	0	56
12" WORM (NDADS)	288	208	0	0	496
M-O Disk	0	158	0	0	168
DLT	154	9	0	0	163
Totals	4,022	19,758	23,147	26,352	73,279
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	20,188	14,669	4,640	4,379		41,502
Communications	183
Other	162
Totals	31,277	39,538	152,154	696,026	259	41,528

Table 6.
Data Arriving at NSSDC During 1999

Astrophysics		Planetary		Space Physics
ADC	2.5 GB	Clementine	0 GB	ACE	23 GB
COBE	5.9	Galileo	8.8	FAST	564
EUVE	5.8	Magellan	8.0	IMP-8	4.5
IUE	3.3	Mariner 4-9	5.1	ISEE	28
Ulysses	0.2	Pioneer Venus	3.6	ISIS	142
Wind	3.1	Viking 1 and 2	12	ISTP
		Voyager 1&2	114	KP’s	110
From HEASARC:		Mars Observer	0	Geotail L0	153
		Mars Global Surv’r	18	Polar L0	291
RXTE	514	Apollo 8	0	Wind L0 +	45
ASCA	352	Giotto	0	ATS-6	5.9
CGRO	145	Lunar Prospector	5.1	SAMPEX	19
Exosat	81	Lunar Surveyor 5-7	0.1	Ulysses	10
ROSAT	68	SL-9/Jupiter	2.9	DE	19
EUVE	39			Yohkoh	14
Other	93			S3-2, S3-3	3.7


Subtotal	1313	Subtotal	178	Subtotal	1340

Grand Total	2,831
•109 new data sets from 74 experiments arrived in 1999 • First data from 60 experiments arrived in 1999

Table 7.
Media Arriving at NSSDC During 1999

Media	Astro- Physics	Space Physics	Planetary Science	Total
4-mm Tape	1	0	0	1
8-mm Tape	6	0	0	6
9-Track Tape	0	11	0	11
CD-ROM (Titles)	0	105	87	192
CD-WO	169	2,215	252	2,636
Magneto-Optic Disk	0	24	0	24
DLT	102	0	0	102
Total	278	2,355	339	2,972

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

	1997	1998	1999
CDAWeb	36,606/8,481*	58,786/23,483	68,127/26,558
OMNIWeb	7,325/3,621	8,784/3,042	9,203/3,349
COHOWeb	1,219/621	1,005/650	1,299/468
ATMOWeb			2,774 **
* 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. ** 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.

Table 8b.
1999 Access Statistics to Geophysical Models and Ephemerides Services

Geophysical Models

International Reference Ionosphere	18,837
MSIS Atmospheric Model	15,317
International Geomagnetic Reference Field	17,899
(includes Corrected Geomagnetic Coordinate Transformations)

Tsyganenko 1989, 1996 Magnetic Field	1,243
Trapped Particles	2,507

Total, Geophysical Models	55,803

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

Plots	10,739
Tabular and "Query"	6,603

Total, SSCWeb	17,342
Heliocentric Spacecraft, Planets, Comets Orbits 3,427 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

	1996	1997	1998	1999
Photo_Gallery	26,000	59,000	504,000	1,381,000
Spacecraft_Data (= "COHO" through 1998)	15,000	11,000	10,000	113,000
All Others	75,000	114,000	151,000	229,000
Total	116,000	184,000	665,000	1,723,000

Table 10.
NDADS 1999 Access Stats - Missions with >10 Unique Sites
Accessing Data Monthly

		Number Requests	Mean Monthly E-addresses Accessing	Number Files
Astrophysics

	IUE	2,861	46	130,636
	IRAS	383	15	3,675

Space Physics

	IMP 8	944	19	28,077
	ISTP	743	17	17,022
	DE	1,908	11	46,229

All Others		2,366		29,857

Grand Totals		9,225		255,596

Table 11.
NSSDC User Community (Offline Requests) [CY 1999]

Affiliation Category	Total Requests	Percent of Total
No Affiliation [GeneralPublic]	680	48.4
Non-US	426	30.3
US Universities/Colleges	90	6.4
US Private Industry	101	7.2
NASA/GSFC	35	2.5
NASA Centers, Excluding GSFC	36	2.6
Other Government Agencies	27	1.9
Miscellaneous	11	0.8
Total	1,406*	100
* Requests for 2,710 Milky Way posters and 1,311 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 - 1999	Offline Data Set Requests 1999
Astrophysics	10,630	476
Earth Science	7,128	20
Planetary Science	42,856	2,075
Space Physics	8,296	198
Ephemeris	86	0
Other	20	0
Total	69,016	2,769
* 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, 1999

Offline	1995	1996	1997	1998	1999
Number of Requests for Tapes	67	30	25	24	12
Number of Tapes Mailed	676	401	428	925	66
Number of Requests for CDs	814	1,233	1,297	1,079	1,013
Number of CDs Mailed	10,469	4,804	6,220	6,825	7,014
Number of Film Requests	128	177	192	300	230
Number of Film Volumes Mailed	894	1,733	2,383	2,353	1,520

Table 14.
AIM Partition Statistics for CY 1999

	Number of Records	Number Added
Subpartition	as of 12/31/99	in 1999
Spacecraft	5,616	292
Experiment	5,669	246
Data Set	5,618	171
Totals	16,903	709
Number of spacecraft with experiments - 1,061 Number of experiments with data sets - 1,441

Table 15.
NSDF Partition Statistics for CY 1999

Discipline	Number of Data Sets
Astrophysics	1,037
Space Physics	441
Earth Science	65
Planetary	43
Other	28
Total	1,614

Table 16.
TRF Partition Statistics as of 12/31/99

Total Number of Records	41,306
Number of Records Inserted	1,463

Table 17.
IRAND Partition Statistics as of 12/31/99

Record Type	Total Records	Records Inserted	Records Updated
Personnel	55,767	991	8,267
Request	80,408	1,386

Table 1. Counts of NSSDC Data Sets and Data Set Sources as of 12/31/99

Table 2. State of the NSSDC Archive as of 12/31/99

Table 3a. Astrophysics Data Electronically Accessible from NSSDC as of December 31, 1999

Table 3b. Space Physics Data Electronically Accessible from NSSDC as of December 31, 1999

Table 4. Counts of Volumes at NSSDC Archive as of 12/31/99

Table 5. Photographic Data Products at NSSDC by Discipline

Table 6. Data Arriving at NSSDC During 1999

Table 7. Media Arriving at NSSDC During 1999

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

Table 8b. 1999 Access Statistics to Geophysical Models and Ephemerides Services

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

Table 10. NDADS 1999 Access Stats - Missions with >10 Unique Sites Accessing Data Monthly

Table 11. NSSDC User Community (Offline Requests) [CY 1999]

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

Table 13. NSSDC Offline Data Dissemination Statistics as of December 31, 1999

Table 14. AIM Partition Statistics for CY 1999

Table 15. NSDF Partition Statistics for CY 1999

Table 16. TRF Partition Statistics as of 12/31/99

Table 17. IRAND Partition Statistics as of 12/31/99