PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-22:12:50
G10     262.2          34.5               15.4 +/-    1.75      24.7 +/-    1.75  0.050 / 0.090
G13     45.0           23.3               10.1 +/-    0.89      20.5 +/-    0.89  0.050 / 0.120
G15     65.1           52.3               13.2 +/-    0.78      16.2 +/-    0.78  0.140 / 0.430
G16     286.5          12.5               13.3 +/-    1.72      35.0 +/-    1.72  0.120 / 0.380
G18     291.3          62.6               13.8 +/-    1.23      15.3 +/-    1.23  0.130 / 0.440
G20     51.8           37.7               10.9 +/-    0.59      16.5 +/-    0.59  0.110 / 0.140
G21     355.8          69.7               13.5 +/-    0.76      14.3 +/-    0.76  0.110 / 0.150
G24     125.1          11.2              -18.3 +/-   18.73     -49.8 +/-   18.73  0.050 / 0.050
G27     319.6          16.8               10.5 +/-    0.87      25.0 +/-    0.87  0.040 / 0.050
G29     165.9          32.1               17.0 +/-    1.43      28.5 +/-    1.43  0.070 / 0.270