PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-02:42:50
G08     294.6          23.3                6.2 +/-    1.31      12.6 +/-    1.31  0.040 / 0.070
G10     358.5          62.8                6.3 +/-    0.50       7.0 +/-    0.50  0.040 / 0.080
G14     227.8          45.6                9.5 +/-    1.31      12.7 +/-    1.31  0.050 / 0.090
G18     58.0           53.7                6.0 +/-    0.78       7.3 +/-    0.78  0.050 / 0.100
G21     144.4          43.0                9.5 +/-    0.93      13.2 +/-    0.93  0.030 / 0.030
G24     60.2           27.8                5.1 +/-    0.68       9.4 +/-    0.68  0.030 / 0.040
G27     255.8          32.9                7.9 +/-    0.68      13.1 +/-    0.68  0.080 / 0.080
G32     240.1          63.9                9.7 +/-    0.82      10.7 +/-    0.82  0.060 / 0.090