JASL User Services Summary 1990-2000

Year Requests
 Mag-tape
 Diskette
 CDROM
 E-transfer
 anon-FTP
 WWW
 Site-years
1990 31 6 21 0 4 0 0 9176
1991 52 11 34 0 7 0 0 14005
1992 77 5 48 0 24 0 0 20816
1993 76 4 45 0 27 0 0 25576
1994 204 1 22 4 44 133 0 54602
1995 453 0 9 26 31 363 24 172261
1996 654 0 18 12 14 465 142 163529
1997 1468 0 8 9 21 673 753 187087
1998 1479 0 3 14 6 645 811 180108
1999 2157 0 2 2 6 1150 991 333385
2000 2409 0 1 2 5 1649 755 432987

Requests
The number of individual requests resulting in the transfer of hourly, daily, or monthly data files

Mag-tapes
Magnetic tape (9-track)

Diskettes
Personal computer diskettes (5.25 and 3.5 inch)

CDROM
CDROM (Produced by NODC in October 1994)

E-transfers
Hands-on electronic transfers (email, network file copy, or FTP)

anon-FTP
Anonymous FTP (Research Quality Data Set, RQDS)

WWW
World-Wide-Web for the RQDS. The distinction between counts of anonymous FTP and WWW transfers within the automated log has an unmeasured degree of uncertainty; however, the cumulative count is correct.

Site-years
Total number of years of data provided for all requested sites

Comments

*Note:

1) In 1998, estimation of anonymous transfers made for ~1.5 months of lost automated reports.

2) Only January through November are tallied for 2000.

3) Difficulties have occurried in distinguishing whether entries in the anonymous transfer log were through anonymous FTP or WWW.



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