PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-02:12:30
G08     297.2          23.0                5.6 +/-    0.80      11.5 +/-    0.80  0.050 / 0.070
G10     353.2          62.4                5.6 +/-    0.62       6.2 +/-    0.62  0.040 / 0.080
G14     225.8          43.3               10.6 +/-    0.95      14.6 +/-    0.95  0.060 / 0.110
G18     54.7           54.8                6.4 +/-    0.71       7.7 +/-    0.71  0.050 / 0.100
G21     142.9          45.4                9.1 +/-    1.28      12.3 +/-    1.28  0.030 / 0.030
G24     62.7           28.6                6.2 +/-    0.71      11.1 +/-    0.71  0.030 / 0.040
G27     258.6          34.0                9.1 +/-    1.60      14.8 +/-    1.60  0.070 / 0.100
G32     236.3          61.5                9.7 +/-    0.60      10.9 +/-    0.60  0.060 / 0.100