1. Ground-Based Global Navigation Satellite System (GNSS) Observation Data (30-second sampling, hourly files) from NASA CDDIS
  2. temporal
YearFile Count
200520734
20068579
20071675
200813920
20098692
20126643
2013643
201410026
201514849
201626733
201711059
20181648
201950164
202034198
202137275
202233239
202341829
202457152
202567431
20265279