PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-18:28:00
G10     263.1          36.1               10.0 +/-    1.97      15.6 +/-    1.97  0.120 / 0.200
G13     43.7           20.9                9.9 +/-    0.96      21.4 +/-    0.96  0.180 / 0.340
G15     67.1           54.4                9.2 +/-    0.72      11.0 +/-    0.72  0.050 / 0.050
G16     282.7          13.3                8.8 +/-    1.95      22.7 +/-    1.95  0.050 / 0.050
G20     290.5          58.5               10.2 +/-    1.41      11.7 +/-    1.41  0.150 / 0.330
G21     357.2          69.9                9.4 +/-    0.57       9.9 +/-    0.57  0.160 / 0.350
G24     120.3          12.4               13.4 +/-    2.76      35.4 +/-    2.76  0.080 / 0.330
G27     320.8          14.4                8.6 +/-    3.61      21.8 +/-    3.61  0.090 / 0.230
G29     167.1          35.2                9.4 +/-    0.62      14.8 +/-    0.62  0.120 / 0.440