Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
1992

Month	File Count
01	888
02	863
03	1004
04	1006
05	1131
06	1109
07	1382
08	1602
09	1576
10	1446
11	1417
12	1414

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NASA Official: Stephen Berrick
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