PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-06:57:50
G07     19.0           68.3                5.8 +/-    0.67       6.2 +/-    0.67  0.060 / 0.050
G08     61.0           46.2                5.0 +/-    0.46       6.7 +/-    0.46  0.040 / 0.040
G09     174.7          44.5                7.7 +/-    0.98      10.5 +/-    0.98  0.030 / 0.030
G11     128.6          28.1                8.2 +/-    1.47      15.0 +/-    1.47  0.020 / 0.030
G18     112.8          10.3               -7.2 +/-   21.24     -19.9 +/-   21.24  0.090 / 0.120
G23     160.8          20.9                7.5 +/-    1.70      16.2 +/-    1.70  0.080 / 0.130
G27     41.1           18.5                3.1 +/-    0.79       7.2 +/-    0.79  0.070 / 0.180
G28     257.9          44.4                6.8 +/-    0.88       9.3 +/-    0.88  0.070 / 0.170
G30     318.7          49.2                4.9 +/-    0.74       6.2 +/-    0.74  0.160 / 0.390