PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-02:57:40
G07     328.0          55.9                4.5 +/-    1.21       5.3 +/-    1.21  0.070 / 0.170
G08     105.1          50.5                5.2 +/-    0.54       6.5 +/-    0.54  0.070 / 0.220
G09     201.8          78.1                5.6 +/-    0.87       5.7 +/-    0.87  0.030 / 0.040
G11     148.5          10.2               -5.7 +/-   14.20     -15.7 +/-   14.20  0.030 / 0.050
G16     45.1           14.1                2.2 +/-    2.64       5.6 +/-    2.64  0.110 / 0.270
G23     154.3          46.9                6.0 +/-    0.74       7.9 +/-    0.74  0.090 / 0.200
G27     58.2           32.8                2.9 +/-    0.66       4.8 +/-    0.66  0.030 / 0.050
G28     234.6          27.1                7.7 +/-    1.75      14.3 +/-    1.75  0.030 / 0.050
G30     299.5          33.6                4.8 +/-    1.19       7.8 +/-    1.19  0.020 / 0.030