1. Ground-Based Global Navigation Satellite System Data (30-second sampling, 24 hour files) from NASA CDDIS
  2. temporal
YearFile Count
199423
2004532
2005594
2006678
20071138
20081806
20091353
20106999
201117479
2012146197
2013583613
2014619670
2015531504
201664618
201745497
201863781
201914381