1. Global Navigation Satellite System (GNSS) Troposphere Zenith Path Delay (ZPD) product (Version 1) from NASA CDDIS
  2. temporal
  3. 2017
  4. 11
  5. 12
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gnss_products_1975_cod19750.tro.Z
gnss_products_1975_cof19750.tro.Z
gnss_products_1975_jpl19750.tro.Z