PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-02:27:50
G08     295.9          23.2                6.1 +/-    1.47      12.4 +/-    1.47  0.080 / 0.030
G10     355.9          62.6                6.1 +/-    0.91       6.7 +/-    0.91  0.040 / 0.050
G14     226.8          44.5               10.3 +/-    2.73      14.0 +/-    2.73  0.050 / 0.120
G18     56.4           54.3                6.9 +/-    1.04       8.2 +/-    1.04  0.060 / 0.110
G21     143.7          44.2                8.7 +/-    1.49      11.9 +/-    1.49  0.030 / 0.020
G24     61.4           28.2                6.5 +/-    1.68      11.8 +/-    1.68  0.040 / 0.020
G27     257.1          33.4                8.6 +/-    1.93      14.0 +/-    1.93  0.070 / 0.080
G32     238.1          62.7                8.4 +/-    1.62       9.4 +/-    1.62  0.060 / 0.080