PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/05-14:12:40
G01     127.9          11.0               -2.7 +/-   44.27      -7.4 +/-   44.27  0.030 / 0.040
G07     49.1           69.7               10.5 +/-    0.58      11.1 +/-    0.58  0.030 / 0.040
G08     51.3           40.4                9.4 +/-    0.79      13.6 +/-    0.79  0.180 / 0.290
G09     177.3          36.0               11.3 +/-    1.21      17.6 +/-    1.21  0.140 / 0.300
G11     119.1          34.7               11.5 +/-    0.67      18.4 +/-    0.67  0.060 / 0.130
G13     321.4          10.9               -3.2 +/-   22.88      -8.8 +/-   22.88  0.050 / 0.130
G17     200.0          13.3                7.8 +/-    1.48      20.2 +/-    1.48  0.030 / 0.040
G18     104.6          16.1               11.4 +/-    1.11      27.6 +/-    1.11  0.030 / 0.040
G28     274.6          52.3               11.0 +/-    0.86      13.5 +/-    0.86  0.040 / 0.080
G30     331.1          59.3                8.5 +/-    0.67       9.7 +/-    0.67  0.050 / 0.080