PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-02:57:50
G08     277.6          22.2               10.8 +/-    1.37      22.5 +/-    1.37  0.060 / 0.140
G10     34.6           62.6                6.9 +/-    0.49       7.7 +/-    0.49  0.060 / 0.130
G11     316.9          10.9               -2.6 +/-   20.92      -7.1 +/-   20.92  0.030 / 0.030
G14     246.2          59.5               10.9 +/-    0.71      12.4 +/-    0.71  0.030 / 0.030
G18     78.3           44.8              -42.9 +/-   59.01     -57.9 +/-   59.01  0.110 / 0.180
G21     151.3          26.8               10.1 +/-    1.33      19.0 +/-    1.33  0.080 / 0.160
G24     46.7           19.7                5.7 +/-    0.73      12.6 +/-    0.73  0.070 / 0.220
G27     240.0          23.5                9.3 +/-    1.32      18.9 +/-    1.32  0.090 / 0.240
G31     181.2          17.8                8.6 +/-    0.47      20.1 +/-    0.47  0.040 / 0.080
G32     282.4          74.5                8.8 +/-    0.64       9.1 +/-    0.64  0.040 / 0.050