Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System (GNSS) Combined Broadcast Ephemeris Data (hourly files) from NASA CDDIS
temporal

Year	File Count
2012	232
2013	38
2014	193
2015	300
2016	524
2017	164
2018	431
2019	511
2020	374
2021	384
2022	347
2023	409
2024	526
2025	514
2026	69

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NASA Official: Doug Newman
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