1. Ground-Based Global Navigation Satellite System (GNSS) Compact Observation Data (1-second sampling, sub-hourly files) from NASA CDDIS
  2. temporal
YearFile Count
2001698722
20021280344
20031786292
20041941602
20052495346
20062602046
20073588613
20083929284
20094319543
20104310833
20114620063
20126670722
20136250994
20149758908
201511861518
201613427847
20179233672
201810139821
201911457857
20209565773
20219032282
202211864307
202312148252
202412024064
202510763083
20262646899