PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-21:27:40
G10     264.1          35.7               17.2 +/-    1.12      27.0 +/-    1.12  0.040 / 0.040
G13     43.9           21.8               12.7 +/-    1.68      26.7 +/-    1.68  0.040 / 0.050
G15     62.3           50.7               15.8 +/-    0.57      19.8 +/-    0.57  0.110 / 0.400
G16     285.3          11.9               16.6 +/-    1.92      44.5 +/-    1.92  0.110 / 0.400
G18     295.6          63.6               15.3 +/-    0.49      16.8 +/-    0.49  0.230 / 0.610
G20     52.8           36.6               13.0 +/-    0.63      20.0 +/-    0.63  0.170 / 0.580
G21     1.1            71.1               15.8 +/-    0.47      16.6 +/-    0.47  0.070 / 0.260
G24     123.6          12.4                9.1 +/-   35.03      24.0 +/-   35.03  0.070 / 0.250
G27     318.9          18.3               13.4 +/-    0.83      30.8 +/-    0.83  0.050 / 0.120
G29     165.9          29.7               16.2 +/-    2.26      28.5 +/-    2.26  0.050 / 0.140