PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-08:43:00
G01     127.2          11.4               -2.9 +/-   31.72      -7.9 +/-   31.72  0.030 / 0.030
G07     54.3           69.2                4.7 +/-    0.36       5.0 +/-    0.36  0.030 / 0.030
G08     49.5           37.9                4.0 +/-    1.28       6.0 +/-    1.28  0.040 / 0.040
G09     174.3          31.5                7.1 +/-    1.59      12.0 +/-    1.59  0.040 / 0.030
G11     117.0          35.4                8.7 +/-    0.93      13.7 +/-    0.93  0.310 / 0.400
G13     321.1          11.8               -1.4 +/-   14.43      -3.8 +/-   14.43  0.120 / 0.290
G17     199.2          16.2                6.0 +/-    3.32      14.5 +/-    3.32  0.110 / 0.100
G18     102.5          16.5                6.1 +/-    2.19      14.6 +/-    2.19  0.100 / 0.070
G28     274.7          52.0                6.8 +/-    3.33       8.4 +/-    3.33  0.240 / 0.330
G30     330.5          59.1                3.6 +/-    0.23       4.1 +/-    0.23  0.240 / 0.320