PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-07:43:10
G01     46.0           22.2                3.8 +/-    0.54       8.0 +/-    0.54  0.070 / 0.080
G06     176.8          30.0                7.5 +/-    1.96      13.2 +/-    1.96  0.060 / 0.090
G13     244.6          27.5                7.0 +/-    1.23      12.9 +/-    1.23  0.030 / 0.030
G15     280.9          14.1                4.4 +/-    1.18      11.3 +/-    1.18  0.020 / 0.030
G17     349.5          75.3                7.1 +/-    0.53       7.3 +/-    0.53  0.080 / 0.180
G19     253.4          61.3                5.9 +/-    0.80       6.6 +/-    0.80  0.120 / 0.180
G24     317.4          16.2                2.6 +/-    2.76       6.3 +/-    2.76  0.040 / 0.070
G28     58.1           51.9                6.2 +/-    0.27       7.7 +/-    0.27  0.040 / 0.080
G30     152.5          37.5                7.9 +/-    0.67      12.0 +/-    0.67  0.140 / 0.350