PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/29-15:43:10
G02     54.6           36.6                8.9 +/-    0.35      13.8 +/-    0.35  0.020 / 0.030
G05     75.1           68.2               10.2 +/-    0.57      10.9 +/-    0.57  0.030 / 0.030
G12     187.6          40.9               11.5 +/-    1.56      16.5 +/-    1.56  0.060 / 0.070
G13     134.8          10.4               -4.3 +/-   24.18     -12.0 +/-   24.18  0.040 / 0.070
G20     204.9          51.6               10.4 +/-    1.04      12.8 +/-    1.04  0.070 / 0.070
G21     266.7          15.6                9.4 +/-    0.96      23.0 +/-    0.96  0.050 / 0.070
G25     245.5          55.9               11.7 +/-    0.76      13.9 +/-    0.76  0.200 / 0.390
G29     328.6          53.9                8.1 +/-    0.96       9.8 +/-    0.96  0.170 / 0.350