PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/27-08:58:10
G02     235.7          75.2                4.8 +/-    0.39       5.0 +/-    0.39  0.190 / 0.440
G05     174.8          11.5               -3.0 +/-   14.79      -8.2 +/-   14.79  0.270 / 0.400
G06     41.5           61.2                3.1 +/-    0.96       3.5 +/-    0.96  0.050 / 0.040
G12     321.9          51.5                3.0 +/-    0.55       3.7 +/-    0.55  0.050 / 0.040
G17     67.8           23.7                3.8 +/-    0.97       7.7 +/-    0.97  0.210 / 0.380
G19     54.9           38.7                3.7 +/-    1.91       5.5 +/-    1.91  0.200 / 0.380
G24     250.5          36.3                6.3 +/-    1.84       9.7 +/-    1.84  0.080 / 0.090
G28     128.8          11.2                5.7 +/-    2.10      15.4 +/-    2.10  0.060 / 0.090