PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-16:42:50
G01     320.7          12.1               -0.3 +/-   19.12      -0.7 +/-   19.12  0.100 / 0.180
G08     265.1          16.3                8.1 +/-    1.28      19.6 +/-    1.28  0.150 / 0.120
G10     67.7           57.2                6.8 +/-    0.86       7.9 +/-    0.86  0.300 / 0.340
G11     310.1          18.1                5.3 +/-    1.41      12.3 +/-    1.41  0.170 / 0.220
G14     275.3          67.6                5.6 +/-    0.40       6.0 +/-    0.40  0.080 / 0.080
G18     96.8           31.6                6.4 +/-    1.25      10.9 +/-    1.25  0.050 / 0.090
G27     228.0          12.9                7.0 +/-    2.19      18.3 +/-    2.19  0.040 / 0.040
G31     177.8          34.3                8.3 +/-    1.96      13.4 +/-    1.96  0.030 / 0.040
G32     351.5          71.9                5.9 +/-    0.49       6.2 +/-    0.49  0.030 / 0.030