PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-08:42:40
G01     95.9           30.2                4.8 +/-    0.79       8.4 +/-    0.79  0.030 / 0.030
G07     120.9          48.7                7.0 +/-    0.76       8.9 +/-    0.76  0.030 / 0.030
G11     72.9           40.8                5.6 +/-    0.54       8.0 +/-    0.54  0.040 / 0.050
G13     299.7          34.6                6.0 +/-    1.23       9.6 +/-    1.23  0.040 / 0.050
G17     210.3          50.8                8.9 +/-    1.87      11.1 +/-    1.87  0.060 / 0.140
G18     67.1           23.8                4.3 +/-    0.85       8.6 +/-    0.85  0.060 / 0.130
G19     212.8          19.0                5.3 +/-    2.29      11.9 +/-    2.29  0.060 / 0.170
G28     336.4          61.8                4.6 +/-    0.55       5.2 +/-    0.55  0.070 / 0.160
G30     74.7           80.2                6.6 +/-    0.64       6.7 +/-    0.64  0.050 / 0.120