Earthdata
CMR Virtual Directories

Global Navigation Satellite System (GNSS) IGS Multi-GNSS Products from NASA CDDIS
temporal

Year	File Count
2012	235
2013	92
2014	2018
2015	2778
2016	5544
2017	5373
2018	5635
2019	10242
2020	8860
2021	10578
2022	21947
2023	8924
2024	14320

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NASA Official: Stephen Berrick
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