PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/24-20:12:30
G02     52.6           39.3               13.4 +/-    0.47      19.7 +/-    0.47  0.210 / 0.340
G05     82.7           70.7               12.5 +/-    0.54      13.2 +/-    0.54  0.150 / 0.380
G12     186.5          40.1               12.8 +/-    1.17      18.6 +/-    1.17  0.030 / 0.090
G13     135.4          10.1               -8.2 +/-   11.09     -22.9 +/-   11.09  0.090 / 0.070
G20     203.6          52.9               12.4 +/-    0.74      15.1 +/-    0.74  0.040 / 0.060
G21     265.4          13.2               10.4 +/-    2.96      27.0 +/-    2.96  0.030 / 0.050
G25     241.2          56.1               13.8 +/-    0.54      16.2 +/-    0.54  0.020 / 0.030
G29     325.4          50.4               12.6 +/-    0.93      15.8 +/-    0.93  0.020 / 0.040