PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-16:57:40
G08     294.0          23.8                7.1 +/-    1.37      14.3 +/-    1.37  0.060 / 0.090
G10     3.3            62.8                8.1 +/-    0.23       9.0 +/-    0.23  0.040 / 0.090
G14     227.5          44.8               11.0 +/-    0.98      14.8 +/-    0.98  0.040 / 0.050
G18     317.4          10.5               -9.8 +/-   18.21     -26.9 +/-   18.21  0.040 / 0.040
G20     61.9           53.5                8.3 +/-    0.61      10.1 +/-    0.61  0.080 / 0.100
G21     144.7          39.5                9.3 +/-    1.13      13.6 +/-    1.13  0.080 / 0.110
G24     55.0           23.7                8.1 +/-    1.37      16.2 +/-    1.37  0.070 / 0.100
G27     260.2          32.9                8.7 +/-    1.35      14.3 +/-    1.35  0.080 / 0.080
G32     240.3          64.6               10.2 +/-    0.82      11.1 +/-    0.82  0.080 / 0.120