PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-17:12:30
G02     252.4          76.6                7.6 +/-    0.62       7.8 +/-    0.62  0.060 / 0.190
G05     170.5          19.8                9.4 +/-    1.74      20.7 +/-    1.74  0.080 / 0.210
G06     40.4           51.5                8.2 +/-    0.64      10.2 +/-    0.64  0.050 / 0.080
G12     322.4          61.7                8.3 +/-    0.55       9.2 +/-    0.55  0.050 / 0.070
G17     75.4           18.4                8.0 +/-    0.63      18.3 +/-    0.63  0.030 / 0.040
G19     59.0           38.7                8.3 +/-    0.56      12.4 +/-    0.56  0.030 / 0.040
G24     238.5          31.8               11.1 +/-    0.94      18.7 +/-    0.94  0.100 / 0.200
G25     317.3          17.0                8.4 +/-    1.55      19.8 +/-    1.55  0.120 / 0.210