PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-14:58:00
G02     58.8           32.8                6.9 +/-    0.83      11.5 +/-    0.83  0.030 / 0.040
G05     63.0           64.3                8.6 +/-    0.68       9.4 +/-    0.68  0.030 / 0.040
G12     186.6          35.6               12.8 +/-    0.74      20.1 +/-    0.74  0.040 / 0.060
G13     131.0          13.8               12.6 +/-    2.15      32.3 +/-    2.15  0.040 / 0.070
G15     164.0          11.0                5.9 +/-   28.51      16.0 +/-   28.51  0.100 / 0.250
G20     207.5          56.6               12.5 +/-    0.74      14.6 +/-    0.74  0.130 / 0.220
G21     270.9          19.3                6.4 +/-    1.35      14.4 +/-    1.35  0.070 / 0.070
G25     237.9          52.9               10.1 +/-    1.15      12.3 +/-    1.15  0.060 / 0.080
G29     332.2          58.3                6.2 +/-    0.62       7.1 +/-    0.62  0.030 / 0.070