Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System (GNSS) Compact Observation Data (30-second sampling, daily, 24 hour files) from NASA CDDIS
temporal
2026

Month	File Count
01	18793
02	17009
03	19773
04	17788
05	18421
06	18111
07	18198
08	10678

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NASA Official: Doug Newman
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