PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-23:42:50
G01     251.9          35.7                9.3 +/-    1.94      14.6 +/-    1.94  0.030 / 0.030
G03     316.0          42.0                7.7 +/-    0.70      10.9 +/-    0.70  0.030 / 0.030
G11     237.6          13.3                7.6 +/-    1.96      19.7 +/-    1.96  0.090 / 0.080
G14     60.1           40.7                6.7 +/-    0.97       9.6 +/-    0.97  0.070 / 0.080
G22     306.3          64.4                7.5 +/-    0.78       8.2 +/-    0.78  0.030 / 0.030
G23     285.6          17.8                8.6 +/-    1.75      19.9 +/-    1.75  0.020 / 0.030
G25     39.7           10.1                4.0 +/-    2.25      11.2 +/-    2.25  0.080 / 0.290
G26     140.7          36.2               11.7 +/-    0.87      18.2 +/-    0.87  0.060 / 0.290
G31     40.3           62.8                6.9 +/-    0.61       7.7 +/-    0.61  0.080 / 0.120
G32     75.9           24.8                8.2 +/-    1.51      16.1 +/-    1.51  0.060 / 0.090