PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-22:42:50
G08     305.2          21.2                6.4 +/-    2.05      13.7 +/-    2.05  0.100 / 0.080
G10     339.9          61.1                6.4 +/-    0.54       7.2 +/-    0.54  0.080 / 0.070
G14     220.1          33.6                9.7 +/-    1.98      15.8 +/-    1.98  0.050 / 0.060
G15     47.5           12.1                5.5 +/-    0.87      14.8 +/-    0.87  0.050 / 0.060
G20     44.4           58.9                8.1 +/-    0.72       9.3 +/-    0.72  0.070 / 0.140
G21     137.8          53.4               10.3 +/-    0.80      12.5 +/-    0.80  0.070 / 0.150
G24     67.1           28.3                6.2 +/-    0.70      11.3 +/-    0.70  0.070 / 0.080
G27     271.4          36.5               10.5 +/-    1.63      16.2 +/-    1.63  0.050 / 0.090
G32     226.8          57.1               10.4 +/-    0.76      12.1 +/-    0.76  0.090 / 0.290