PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-03:27:30
G01     318.2          19.5                9.2 +/-    1.81      20.5 +/-    1.81  0.020 / 0.020
G08     254.1          12.2               10.7 +/-    2.03      28.4 +/-    2.03  0.030 / 0.020
G10     81.5           53.2                9.9 +/-    0.77      12.0 +/-    0.77  0.040 / 0.030
G11     299.8          25.6                8.8 +/-    2.31      16.9 +/-    2.31  0.040 / 0.040
G14     308.0          71.6                8.6 +/-    0.53       9.0 +/-    0.53  0.090 / 0.220
G18     102.8          28.8                8.7 +/-    1.21      15.7 +/-    1.21  0.240 / 0.380
G22     301.3          11.9                5.5 +/-    7.93      14.8 +/-    7.93  0.050 / 0.040
G31     176.5          43.2               10.4 +/-    0.79      14.4 +/-    0.79  0.050 / 0.050
G32     6.6            67.2                7.6 +/-    0.53       8.2 +/-    0.53  0.070 / 0.060