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	16246
02	5748
03	18394
04	6793
05	7702
06	20342
07	20402
08	17493
09	19135
10	20752
11	20550
12	20107

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