PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-10:27:40
G02     234.9          72.4                5.3 +/-    0.99       5.5 +/-    0.99  0.100 / 0.350
G05     174.7          12.3                4.6 +/-    2.42      12.3 +/-    2.42  0.220 / 0.390
G06     41.2           61.7                4.6 +/-    0.42       5.1 +/-    0.42  0.070 / 0.140
G12     321.4          49.6                4.7 +/-    0.84       5.9 +/-    0.84  0.070 / 0.150
G17     70.0           21.6                3.2 +/-    0.91       6.8 +/-    0.91  0.040 / 0.060
G19     51.9           42.5                4.4 +/-    0.64       6.1 +/-    0.64  0.040 / 0.060
G24     242.7          35.8                6.2 +/-    0.88       9.7 +/-    0.88  0.100 / 0.220
G25     316.2          14.7                1.8 +/-    2.47       4.5 +/-    2.47  0.070 / 0.220