Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Differential Code Bias Product from NASA CDDIS
temporal

Year	File Count
1999	1
2013	369
2014	366
2015	369
2016	265
2017	8
2018	80
2019	271
2020	180
2021	198
2022	162
2023	433
2024	330

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NASA Official: Stephen Berrick
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