Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
2015

Month	File Count
01	33827
02	31492
03	34325
04	26713
05	22935
06	19369
07	20419
08	23075
09	24454
10	31918
11	34830
12	26540

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NASA Official: Stephen Berrick
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