PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-02:58:10
G08     294.8          23.3                8.3 +/-    0.91      17.0 +/-    0.91  0.030 / 0.030
G10     358.2          62.8                7.8 +/-    0.62       8.6 +/-    0.62  0.030 / 0.030
G14     227.7          45.5               11.9 +/-    1.82      15.9 +/-    1.82  0.030 / 0.020
G18     57.6           53.9                8.3 +/-    0.82      10.0 +/-    0.82  0.030 / 0.020
G21     144.3          43.3               10.4 +/-    0.56      14.4 +/-    0.56  0.040 / 0.070
G24     60.3           27.9                6.9 +/-    1.83      12.6 +/-    1.83  0.050 / 0.060
G27     255.9          32.9               10.3 +/-    2.77      17.0 +/-    2.77  0.070 / 0.090
G32     239.9          63.9               10.0 +/-    0.74      11.0 +/-    0.74  0.060 / 0.070