1. Ground-Based Global Navigation Satellite System (GNSS) Observation Data (30-second sampling, hourly files) from NASA CDDIS
  2. temporal
YearFile Count
200521796
20069025
20071780
200814707
20099150
20126997
2013675
201410563
201515634
201628099
201711614
20181723
201952810
202036005
202139215
202234946
202344006
20248297