1. Ground-Based Global Navigation Satellite System (GNSS) Observation Data (30-second sampling, daily, 24 hour files) from NASA CDDIS
  2. temporal
YearFile Count
199215954
199325182
199422671
199533124
199640870
199749127
199860250
199966762
200092894
200184106
2002100115
2003114665
2004119441
2005124017
2006134115
2007136855
2008140768
2009147132
2010159916
2011172230
2012260076
2013252446
2014311522
2015292223
2016365325
2017194457
2018208369
2019179027
2020146722
202196911
2022106685
202385721
202480678
202556137