Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
2021

Month	File Count
01	15900
02	5393
03	18044
04	6423
05	7313
06	20033
07	20062
08	17130
09	18839
10	20488
11	20234
12	19773

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