Earthdata
CMR Virtual Directories

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

Year	File Count
2016	7773
2017	38811
2018	74549
2019	147558
2020	107575
2021	82086
2022	89998
2023	137658
2024	51992

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NASA Official: Stephen Berrick
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