PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-17:28:20
G02     17.3           66.2                8.7 +/-    0.74       9.4 +/-    0.74  0.030 / 0.050
G05     153.8          52.1               13.2 +/-    0.63      16.2 +/-    0.63  0.040 / 0.060
G06     49.2           21.6                7.9 +/-    0.56      16.7 +/-    0.56  0.020 / 0.030
G12     201.1          75.6                9.6 +/-    0.91       9.8 +/-    0.91  0.030 / 0.040
G19     90.0           19.2               10.3 +/-    1.24      23.1 +/-    1.24  0.080 / 0.150
G25     308.1          46.9                8.5 +/-    1.24      11.2 +/-    1.24  0.090 / 0.120
G29     299.3          19.4               10.5 +/-    0.96      23.4 +/-    0.96  0.060 / 0.080