IWV timeseries Integrated Water Vapour time series plots Choose the data source of IWV. GNSS NWP GNSS + NWP Choose the period over which you would like data. Start date: time: 0:001:002:003:004:005:006:007:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00 End date: time: 0:001:002:003:004:005:006:007:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00 Choose how you would like to restrict the selection of GNSS data. Select a method, please. By station name By latitude and longitude By altitude To select more than one station press the ctrl key. Lower latitude limit: Upper latitude limit: Lower longitude limit: Upper longitude limit: Lower altitude limit: Upper altitude limit: