PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-04:57:40
G01     318.5          19.3                6.1 +/-    1.62      13.7 +/-    1.62  0.440 / 0.290
G08     255.8          12.3                5.7 +/-   12.94      15.1 +/-   12.94  0.150 / 0.200
G10     82.5           52.1                5.4 +/-    0.96       6.7 +/-    0.96  0.130 / 0.170
G11     301.3          24.0                4.8 +/-    2.25       9.7 +/-    2.25  0.130 / 0.180
G14     295.9          69.7                5.5 +/-    0.54       5.9 +/-    0.54  0.060 / 0.200
G18     303.1          41.4                5.3 +/-    1.19       7.5 +/-    1.19  0.080 / 0.220
G20     100.7          42.4                7.0 +/-    0.68       9.8 +/-    0.68  0.040 / 0.050
G22     301.8          12.4                5.8 +/-    7.67      15.3 +/-    7.67  0.040 / 0.050
G31     173.4          45.8                6.2 +/-    1.01       8.2 +/-    1.01  0.270 / 0.290
G32     14.7           65.0                4.1 +/-    0.37       4.4 +/-    0.37  0.250 / 0.320