PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-02:57:40
G01     108.7          22.7               19.4 +/-    0.97      40.0 +/-    0.97  0.030 / 0.020
G07     98.7           61.8                6.9 +/-    1.19       7.7 +/-    1.19  0.030 / 0.030
G08     42.2           22.9                3.8 +/-    1.92       7.9 +/-    1.92  0.170 / 0.200
G09     172.4          14.0                6.2 +/-    1.45      15.7 +/-    1.45  0.170 / 0.220
G11     100.4          44.7                8.8 +/-    0.92      11.9 +/-    0.92  0.150 / 0.270
G13     312.1          27.2                5.1 +/-    2.53       9.5 +/-    2.53  0.230 / 0.390
G17     202.8          33.9                9.1 +/-    0.95      14.7 +/-    0.95  0.050 / 0.070
G19     206.7          11.2               -0.8 +/-    9.84      -2.3 +/-    9.84  0.050 / 0.080
G28     294.0          55.0                5.6 +/-    1.36       6.6 +/-    1.36  0.060 / 0.070
G30     351.8          73.1                6.0 +/-    0.51       6.3 +/-    0.51  0.060 / 0.070