PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-17:12:30
G02     310.4          80.1                8.3 +/-    0.56       8.4 +/-    0.56  0.060 / 0.130
G05     166.3          30.1               11.6 +/-    1.36      20.2 +/-    1.36  0.080 / 0.100
G06     41.5           40.7                7.8 +/-    0.96      11.3 +/-    0.96  0.130 / 0.190
G12     314.2          73.7                8.0 +/-    0.32       8.4 +/-    0.32  0.140 / 0.240
G17     84.4           11.6                7.7 +/-    2.39      20.8 +/-    2.39  0.130 / 0.140
G19     70.0           32.1                7.5 +/-    4.34      12.6 +/-    4.34  0.110 / 0.170
G24     228.8          24.3               11.1 +/-    2.66      22.1 +/-    2.66  0.030 / 0.020
G25     317.5          27.1                8.3 +/-    0.92      15.4 +/-    0.92  0.040 / 0.030