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
200092895
200184108
2002100116
2003114743
2004119799
2005124378
2006134532
2007137251
2008141187
2009147516
2010160290
2011172596
2012260447
2013252814
2014311914
2015292588
2016365692
2017194822
2018208734
2019179391
2020147089
202197019
2022106685
202385721
202481144
202558718
202638087