Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Mixed Broadcast Ephemeris Data (daily files) from NASA CDDIS
temporal

Year	File Count
2012	1
2013	560
2014	4878
2015	5989
2016	25790
2017	10194
2018	4851
2019	48679
2020	47530
2021	48456
2022	77335
2023	32191

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NASA Official: Stephen Berrick
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