Earthdata
CMR Virtual Directories

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

Month	File Count
01	5273
02	4883
03	5792
04	5144
05	5402
06	5215
07	5270
08	5177
09	5057
10	664

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NASA Official: Doug Newman
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