PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-05:12:40
G01     232.8          23.2                8.1 +/-    2.24      16.5 +/-    2.24  0.040 / 0.040
G03     305.3          58.9                6.0 +/-    0.96       6.9 +/-    0.96  0.040 / 0.050
G14     79.7           28.1                5.3 +/-    0.60       9.7 +/-    0.60  0.090 / 0.220
G16     156.1          35.0                7.9 +/-    1.02      12.6 +/-    1.02  0.100 / 0.270
G22     248.7          75.6                7.0 +/-    1.08       7.2 +/-    1.08  0.110 / 0.180
G23     299.9          29.8                6.1 +/-    1.31      10.7 +/-    1.31  0.080 / 0.210
G26     118.2          51.1                7.9 +/-    0.94       9.8 +/-    0.94  0.050 / 0.060
G31     41.5           42.1                5.2 +/-    0.47       7.3 +/-    0.47  0.040 / 0.070
G32     91.8           13.5                6.7 +/-    1.33      17.4 +/-    1.33  0.070 / 0.180