PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-13:42:30
G01     39.7           14.5                5.1 +/-    2.47      12.8 +/-    2.47  0.090 / 0.120
G06     173.3          40.6                8.9 +/-    1.35      12.8 +/-    1.35  0.080 / 0.140
G13     235.4          21.8                6.1 +/-    1.92      12.8 +/-    1.92  0.170 / 0.290
G15     270.4          11.7                6.6 +/-    2.13      17.8 +/-    2.13  0.180 / 0.180
G17     353.2          72.0                6.4 +/-    0.39       6.7 +/-    0.39  0.050 / 0.030
G19     283.3          70.9                6.9 +/-    0.57       7.3 +/-    0.57  0.040 / 0.020
G24     316.3          19.2                5.0 +/-    2.43      11.2 +/-    2.43  0.040 / 0.040
G28     66.0           51.2                7.2 +/-    0.96       8.9 +/-    0.96  0.050 / 0.030
G30     154.9          26.7                6.4 +/-    1.18      12.0 +/-    1.18  0.060 / 0.080