PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-01:57:50
G08     286.8          23.5                8.6 +/-    1.50      17.5 +/-    1.50  0.050 / 0.120
G10     15.2           63.3                7.6 +/-    0.52       8.4 +/-    0.52  0.070 / 0.100
G14     235.0          52.2                9.5 +/-    0.70      11.7 +/-    0.70  0.030 / 0.040
G18     68.3           49.5                8.0 +/-    0.62      10.1 +/-    0.62  0.030 / 0.030
G21     148.0          35.2                8.7 +/-    1.42      13.7 +/-    1.42  0.050 / 0.110
G24     53.3           24.6                7.6 +/-    0.42      15.0 +/-    0.42  0.040 / 0.120
G27     248.0          28.9                8.7 +/-    0.95      15.5 +/-    0.95  0.090 / 0.110
G32     254.4          69.3                9.1 +/-    0.83       9.7 +/-    0.83  0.090 / 0.120