PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-21:57:50
G02     71.0           24.8               13.3 +/-    0.97      26.2 +/-    0.97  0.060 / 0.180
G05     46.8           51.1               12.5 +/-    1.19      15.5 +/-    1.19  0.090 / 0.200
G12     181.4          16.2               20.9 +/-    3.11      50.4 +/-    3.11  0.060 / 0.130
G13     116.6          25.6               17.4 +/-    1.24      33.6 +/-    1.24  0.150 / 0.140
G15     156.6          23.8               20.8 +/-    1.51      41.8 +/-    1.51  0.060 / 0.090
G18     223.3          13.5               19.0 +/-    2.89      49.1 +/-    2.89  0.050 / 0.110
G20     222.8          78.7               15.9 +/-    0.71      16.2 +/-    0.71  0.030 / 0.040
G21     283.8          26.9               14.6 +/-    1.46      27.4 +/-    1.46  0.020 / 0.030
G25     213.8          36.8               17.0 +/-    1.61      26.0 +/-    1.61  0.030 / 0.050
G29     342.9          72.5               16.5 +/-    0.57      17.2 +/-    0.57  0.040 / 0.050