GNSS-Derived Tropospheric Delay and Gradient Dataset from Malawi and Tanzania

Dataset Description This dataset contains Global Navigation Satellite System (GNSS)-derived tropospheric delay and gradient estimates for 2015 and 2019 from eight GNSS stations in Malawi and Tanzania. The data are provided in Comma-separated values (CSV) format and include epoch-wise estimates of dry and wet zenith tropospheric delays, associated uncertainty estimates, and horizontal tropospheric gradients. File Naming Convention Files follow the naming convention station_name{DOY}0_{year}.csv, where station_name is the four-character GNSS station code, DOY is the day of year (001–365 or 001–366 for leap years), and year is the observation year. For example, ctpm0010_2015.csv represents data from station CTPM for day 001 of 2015. Table 1 summarises the locations and metadata of the eight GNSS stations. Table 1. GNSS station metadata for the tropospheric delay dataset. Monument ID Station Longitude (°) Latitude (°) Elevation (m) Description Date Established 24495 CTPM 33.263 −9.701 1,285.60 Chitipa, Malawi Sunday, July 1, 2012 24496 KARO 33.896 −9.954 513.8 Karonga Airport, Malawi Sunday, July 1, 2012 24494 LIVA 34.107 −10.614 1,359.50 Livingstonia, Malawi Sunday, July 1, 2012 24192 MATL 34.585 −9.592 2,184.10 Matola, Tanzania Friday, July 20, 2012 23218 MZUZ 34.006 −11.425 1,261.20 Mzuzu, Malawi Tuesday, August 24, 2010 24197 SNGC 35.673 −10.690 1,181.20 Songea, Tanzania Saturday, July 21, 2012 24493 VWZM 33.574 −11.175 1,113.30 Vwaza Marsh, Malawi Sunday, July 1, 2012 23219 ZOMB 35.325 −15.376 972.6 Zomba, Malawi Saturday, August 21, 2010