PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-13:57:30
G02     356.4          76.5                5.0 +/-    0.77       5.2 +/-    0.77  0.040 / 0.080
G05     165.3          35.0                9.7 +/-    1.07      15.3 +/-    1.07  0.050 / 0.090
G06     41.8           40.2                3.8 +/-    0.54       5.5 +/-    0.54  0.030 / 0.030
G12     306.2          72.9                3.9 +/-    0.71       4.1 +/-    0.71  0.030 / 0.030
G19     79.0           24.0                7.3 +/-    0.43      14.6 +/-    0.43  0.110 / 0.160
G24     227.5          21.1                7.9 +/-    1.74      17.0 +/-    1.74  0.090 / 0.170
G25     316.5          33.3                4.7 +/-    1.42       7.7 +/-    1.42  0.080 / 0.090
G29     290.9          15.4                3.8 +/-    1.72       9.4 +/-    1.72  0.090 / 0.100