PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-23:27:40
G08     286.4          23.4                9.9 +/-    1.26      20.0 +/-    1.26  0.080 / 0.110
G10     20.1           62.9                7.9 +/-    0.55       8.7 +/-    0.55  0.090 / 0.110
G14     234.9          50.4               11.1 +/-    1.99      13.9 +/-    1.99  0.050 / 0.120
G18     317.6          15.3                6.7 +/-    1.83      16.6 +/-    1.83  0.050 / 0.130
G20     72.6           49.3                8.3 +/-    0.72      10.5 +/-    0.72  0.060 / 0.090
G21     149.1          35.0                9.8 +/-    1.26      15.6 +/-    1.26  0.060 / 0.090
G24     49.7           21.1                6.2 +/-    0.58      13.3 +/-    0.58  0.080 / 0.150
G27     250.0          28.8                8.6 +/-    1.80      15.4 +/-    1.80  0.100 / 0.180
G31     182.4          11.5                4.5 +/-   26.55      12.1 +/-   26.55  0.070 / 0.160
G32     260.9          72.9                8.8 +/-    0.61       9.2 +/-    0.61  0.070 / 0.130