PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-04:27:50
G01     41.8           17.2                2.0 +/-    0.85       4.6 +/-    0.85  0.050 / 0.080
G06     177.9          35.3                7.1 +/-    0.82      11.2 +/-    0.82  0.040 / 0.060
G13     239.6          22.8                5.9 +/-    3.32      12.1 +/-    3.32  0.090 / 0.240
G15     271.1          12.9                6.3 +/-    1.96      16.4 +/-    1.96  0.110 / 0.310
G17     357.8          71.5                4.3 +/-    0.71       4.5 +/-    0.71  0.140 / 0.210
G19     276.2          69.2                3.8 +/-    0.84       4.0 +/-    0.84  0.090 / 0.250
G24     317.3          17.5                3.3 +/-    2.80       7.6 +/-    2.80  0.020 / 0.030
G28     71.0           46.8                2.6 +/-    0.39       3.4 +/-    0.39  0.030 / 0.040
G30     153.3          25.4                6.8 +/-    1.19      13.2 +/-    1.19  0.130 / 0.200