PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-19:12:50
G10     244.6          20.5               12.1 +/-    1.18      26.4 +/-    1.18  0.040 / 0.050
G13     62.3           34.7               11.6 +/-    0.97      18.5 +/-    0.97  0.050 / 0.050
G15     101.0          57.2               12.8 +/-    0.74      14.9 +/-    0.74  0.050 / 0.070
G16     307.5          12.9                9.6 +/-    1.46      25.0 +/-    1.46  0.060 / 0.070
G18     259.4          51.8               12.0 +/-    0.88      14.8 +/-    0.88  0.110 / 0.270
G20     37.0           55.6               11.6 +/-    0.51      13.8 +/-    0.51  0.140 / 0.340
G21     327.8          57.0               11.2 +/-    0.78      13.1 +/-    0.78  0.090 / 0.350
G26     280.1          17.2               10.3 +/-    1.04      24.3 +/-    1.04  0.100 / 0.390
G29     159.6          52.6               12.8 +/-    1.33      15.6 +/-    1.33  0.050 / 0.110