PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-15:43:00
G02     67.4           25.8                9.6 +/-    2.10      18.5 +/-    2.10  0.030 / 0.030
G05     50.0           54.9               11.5 +/-    0.63      13.7 +/-    0.63  0.020 / 0.030
G12     184.2          24.3               18.7 +/-    1.51      37.3 +/-    1.51  0.180 / 0.200
G13     122.4          21.2               17.3 +/-    3.23      36.9 +/-    3.23  0.140 / 0.240
G15     158.0          19.6               21.6 +/-    1.77      48.1 +/-    1.77  0.030 / 0.020
G20     215.1          68.7               15.6 +/-    0.35      16.6 +/-    0.35  0.030 / 0.030
G21     279.8          25.7               11.4 +/-    1.81      22.0 +/-    1.81  0.090 / 0.130
G25     223.9          44.4               16.5 +/-    2.92      22.5 +/-    2.92  0.100 / 0.130
G29     342.9          69.2               11.8 +/-    0.45      12.5 +/-    0.45  0.080 / 0.280