PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-17:43:00
G08     311.9          17.7                9.1 +/-    2.35      21.3 +/-    2.35  0.050 / 0.070
G10     325.5          58.8                8.9 +/-    0.82      10.2 +/-    0.82  0.050 / 0.060
G14     216.8          28.5               11.5 +/-    1.96      20.9 +/-    1.96  0.070 / 0.070
G15     46.3           11.7               10.0 +/-    1.72      26.9 +/-    1.72  0.090 / 0.090
G18     37.1           59.5               11.0 +/-    0.47      12.6 +/-    0.47  0.100 / 0.170
G21     131.6          53.9               13.0 +/-    0.33      15.7 +/-    0.33  0.240 / 0.190
G24     78.5           30.5               10.4 +/-    1.29      18.0 +/-    1.29  0.030 / 0.040
G27     276.8          37.9               10.0 +/-    1.84      15.1 +/-    1.84  0.030 / 0.040
G32     221.3          48.6               11.4 +/-    1.78      14.7 +/-    1.78  0.090 / 0.060