Current IGS GPS Data Holdings for 2000 (as of 19-Jul-00 09:07)                 
                                                                                                
Mon.                                    Receiver       Start   Start    End     End    No.      
Name    Site Name      Lat.   Long.       Type         Date     Day    Date     Day    Days     
---- ---------------- ------ ------- --------------- --------- ----- --------- ----- --------   
INEG Aguascalientes    21 52 -102 17 ASHTECH P-XII3  04-May-00 00125 17-Jul-00 00199       32   
ALBH Albert Head       48 23 -123 29 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      200   
ALGO Algonquin         45 57  -78 04 ROGUE SNR-12 AC 01-Jan-00 00001 18-Jul-00 00200      200   
ALIC Alice Springs    -23 40  133 53 AOA ICS-4000Z A 14-Jan-00 00014 18-Jul-00 00200      186   
                                     ROGUE SNR-8100  01-Jan-00 00001 13-Jan-00 00013       13   
SELE Almaty            43 11   77 01 ROGUE SNR-8000  01-Jan-00 00001 17-Jul-00 00199      199   
AMMN Amman             32 02   35 53 ASHTECH Z-XII3  09-Apr-00 00100 17-Jul-00 00199       92   
ANKR Ankara            39 53   32 45 AOA SNR-8000 AC 12-Jul-00 00194 17-Jul-00 00199        5   
                                     ROGUE SNR-8000  01-Jan-00 00001 10-Jul-00 00192       72   
USNA Annapolis         38 36   76 18 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      199   
AOA1 Aoa, Westlake     34 10 -118 50 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      197   
AREQ Arequipa         -16 28  -71 38 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      176   
ARTU Arti              56 27   58 31 ASHTECH Z-XII3  01-Jan-00 00001 18-Jul-00 00200      197   
ASC1 Ascension Island -07 58  -14 49 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      187   
AUCK Auckland         -35 33  174 28 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      196   
BAHR Bahrain           26 13   50 37 ASHTECH Z-XIID  01-Jan-00 00001 18-Jul-00 00200      198   
BAKO Bakosurtanal     -06 29  106 51 TRIMBLE 4000SSE 02-Jan-00 00002 18-Jul-00 00200      188   
IISC Bangalore         12 59   77 40 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      145   
BARH Bar Harbor        44 12  -68 08 TRIMBLE 4000SSI 01-Jan-00 00001 18-Jul-00 00200      200   
BARB Barbados          13 05  -59 37 ASHTECH UZ-12   01-Jan-00 00001 17-Jul-00 00199       55   
BJFS Beijing           39 55  116 25 ASHTECH Z-XII3  01-Jan-00 00001 18-Jul-00 00200      198   
BRMU Bermuda           32 21  -64 39 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      197   
BILI Bili              68 06  166 24 ASHTECH Z-XII3  02-Jan-00 00002 19-Jun-00 00171      136   
POL2 Bishkek           42 32   74 28 TRIMBLE 4000SSE 01-Jan-00 00001 18-Jul-00 00200      200   
BOR1 Borowiec          52 17   17 05 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      200   
BRAZ Brasilia         -15 57  -47 53 ROGUE SNR-8000  01-Jan-00 00001 11-Jun-00 00163      122   
BRUS Brussels          50 18   04 13 AOA SNR-12 ACT  01-Jan-00 00001 26-Jan-00 00026       24   
                                     ASHTECH UZ-12   28-Mar-00 00088 18-Jul-00 00200      107   
                                     ROGUE SNR-8000  27-Jan-00 00027 27-Mar-00 00087       61   
CAS1 Casey            -66 16  110 32 AOA ICS-4000Z   01-Jan-00 00001 04-Feb-00 00035       35   
                                     AOA ICS-4000Z A 05-Feb-00 00036 18-Jul-00 00200      165   
CEDU Ceduna           -31 52  133 48 ASHTECH Z-XII3  01-Jan-00 00001 18-Jul-00 00200      200   
CHAT Chatham Island   -43 58 -176 34 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      200   
CHWK Chilliwack        49 10 -122 01 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      200   
CHUM Chumysh           43 00   74 45 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      200   
CHUR Churchill         58 27  -94 00 ROGUE SNR-12 AC 01-Jan-00 00001 18-Jul-00 00200      200   
COCO Cocos Island     -12 12   96 50 AOA SNR-12 ACT  01-Jan-00 00001 18-Jul-00 00200      198   
AMC2 Colorado Springs  38 48 -104 31 ROGUE SNR-12    01-Jan-00 00001 18-Jul-00 00200      199   
CORD Cordoba          -31 43  -64 28 ROGUE SNR-8000  01-Jan-00 00001 18-Jul-00 00200      177   
.
.
.
YAKZ Yakutsk           62 02  129 41 ASHTECH Z-XII3  01-Jan-00 00001 18-Jul-00 00200      193   
YAR1 Yaragadee        -29 03  115 21 ROGUE SNR-8100  01-Jan-00 00001 18-Jul-00 00200      200   
YAR2 Yaragadee        -29 03  115 21 AOA ICS-4000Z A 08-Mar-00 00068 18-Jul-00 00200      132   
YELL Yellowknife       62 29 -114 29 ROGUE SNR-12 AC 01-Jan-00 00001 18-Jul-00 00200      200   
YSSK Yuzhno-Sakhalins  47 01  142 43 ASHTECH Z-XII3  01-Jan-00 00001 18-Jul-00 00200      183   
ZECK Zelenchukskaya    43 48   41 36 ROGUE SNR-8000  01-Jan-00 00001 17-Jul-00 00199      187   
ZIMM Zimmerwald        46 53   07 28 TRIMBLE 4000SSE 01-Jan-00 00001 18-Jul-00 00200      197   
ZWEN Zvenigorod        55 24   36 30 AOA SNR-8000 AC 01-Jan-00 00001 27-Jun-00 00179      170   
**** **************** ****** *******                                                 --------   
                                                                                       32,622   

210 rows selected.

Figure 2. Yearly CDDIS Data Holdings File (ftp://cddisa.gsfc.nasa.gov/pub/reports/gpsdata/cddis_summary.current)