PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-21:12:30
G05     47.0           24.7               15.8 +/-    2.08      31.0 +/-    2.08  0.080 / 0.090
G15     130.6          49.4               21.0 +/-    0.88      26.7 +/-    0.88  0.090 / 0.080
G18     242.0          39.0               19.5 +/-    1.00      28.8 +/-    1.00  0.120 / 0.290
G20     25.1           69.6               17.4 +/-    0.46      18.4 +/-    0.46  0.150 / 0.330
G21     309.9          45.4               17.1 +/-    0.89      22.9 +/-    0.89  0.050 / 0.050
G25     198.6          11.8               24.9 +/-    2.92      66.8 +/-    2.92  0.030 / 0.050
G26     294.5          19.4               15.0 +/-    1.99      33.5 +/-    1.99  0.040 / 0.040
G29     150.2          72.7               20.2 +/-    0.48      21.0 +/-    0.48  0.040 / 0.040