Earthdata
CMR Virtual Directories

Global Navigation Satellite System (GNSS) Analysis Center Final Earth Rotation Parameters Product from NASA CDDIS
temporal

Year	File Count
2011	2
2012	35
2013	5
2014	20
2015	23
2016	42
2017	44
2018	46
2019	88
2020	342
2021	323
2022	256
2023	6

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NASA Official: Stephen Berrick
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