PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-20:12:50
G01     242.1          30.7               10.3 +/-    1.67      17.8 +/-    1.67  0.130 / 0.120
G03     313.4          51.9                7.1 +/-    1.32       8.8 +/-    1.32  0.120 / 0.150
G14     68.9           35.3                7.2 +/-    0.41      11.3 +/-    0.41  0.070 / 0.260
G16     160.2          24.8               10.9 +/-    0.71      21.4 +/-    0.71  0.090 / 0.220
G18     211.7          19.6                9.1 +/-    1.13      20.1 +/-    1.13  0.060 / 0.130
G22     288.0          72.5                9.3 +/-    0.73       9.7 +/-    0.73  0.050 / 0.150
G23     291.9          22.7                8.1 +/-    1.56      16.7 +/-    1.56  0.100 / 0.080
G26     132.3          43.7               11.3 +/-    0.92      15.6 +/-    0.92  0.110 / 0.110
G31     39.4           55.2                6.5 +/-    0.53       7.7 +/-    0.53  0.040 / 0.030
G32     83.4           19.0                7.7 +/-    1.31      17.4 +/-    1.31  0.040 / 0.040