PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-08:12:40
G01     39.6           14.2                3.4 +/-    2.55       8.6 +/-    2.55  0.130 / 0.320
G06     174.4          41.9                8.0 +/-    0.95      11.2 +/-    0.95  0.100 / 0.410
G13     234.7          20.2                6.4 +/-    2.54      13.9 +/-    2.54  0.040 / 0.050
G15     270.6          10.9                4.3 +/-    1.73      11.7 +/-    1.73  0.040 / 0.050
G17     12.6           66.3                6.3 +/-    0.62       6.8 +/-    0.62  0.110 / 0.110
G19     279.4          68.2                7.1 +/-    0.93       7.5 +/-    0.93  0.210 / 0.150
G24     313.8          25.3                3.5 +/-    1.15       6.7 +/-    1.15  0.070 / 0.130
G28     73.7           46.7                6.9 +/-    1.09       9.0 +/-    1.09  0.070 / 0.150
G30     155.9          26.1                6.8 +/-    0.91      13.0 +/-    0.91  0.040 / 0.020