PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-02:43:10
G01     319.5          16.6                5.4 +/-    1.48      12.9 +/-    1.48  0.210 / 0.290
G08     257.3          14.0                7.3 +/-    3.63      18.5 +/-    3.63  0.200 / 0.260
G10     77.5           53.8                6.5 +/-    0.47       7.8 +/-    0.47  0.070 / 0.160
G11     303.7          22.9                5.5 +/-    1.36      11.2 +/-    1.36  0.090 / 0.210
G14     289.3          69.6                7.2 +/-    0.79       7.6 +/-    0.79  0.030 / 0.050
G18     305.9          39.4                6.0 +/-    1.98       8.8 +/-    1.98  0.030 / 0.050
G20     81.3           61.3               22.2 +/-    0.72      24.9 +/-    0.72  0.130 / 0.300
G31     174.3          42.2                7.8 +/-    0.93      10.9 +/-    0.93  0.130 / 0.340
G32     9.0            67.4                6.1 +/-    0.62       6.5 +/-    0.62  0.090 / 0.100