PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-17:42:50
G02     64.5           28.7               13.7 +/-    0.35      24.7 +/-    0.35  0.080 / 0.210
G05     53.4           59.4               13.9 +/-    0.74      15.8 +/-    0.74  0.090 / 0.220
G12     184.5          26.9               17.0 +/-    0.86      31.8 +/-    0.86  0.050 / 0.070
G13     125.1          19.1               18.2 +/-    1.24      40.9 +/-    1.24  0.050 / 0.080
G15     160.3          16.7               20.4 +/-    2.74      48.7 +/-    2.74  0.070 / 0.110
G20     211.7          66.5               17.4 +/-    0.50      18.8 +/-    0.50  0.070 / 0.110
G21     276.6          22.7               14.6 +/-    2.17      30.1 +/-    2.17  0.120 / 0.410
G25     225.6          46.6               18.6 +/-    0.92      24.5 +/-    0.92  0.120 / 0.340
G29     337.8          65.1               15.1 +/-    0.67      16.5 +/-    0.67  0.040 / 0.050