PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-20:42:50
G10     252.5          28.5               13.1 +/-    0.77      23.7 +/-    0.77  0.070 / 0.130
G13     51.5           28.4                9.6 +/-    0.70      17.4 +/-    0.70  0.070 / 0.110
G15     91.5           60.1               12.3 +/-    0.25      14.0 +/-    0.25  0.040 / 0.060
G16     292.8          15.5                9.5 +/-    3.70      23.2 +/-    3.70  0.040 / 0.060
G20     272.8          52.2               12.0 +/-    0.69      14.7 +/-    0.69  0.070 / 0.150
G21     336.6          61.7               12.3 +/-    0.56      13.8 +/-    0.56  0.070 / 0.180
G26     265.5          14.7               10.7 +/-    2.12      26.9 +/-    2.12  0.030 / 0.050
G29     165.4          48.1               13.2 +/-    0.40      17.0 +/-    0.40  0.030 / 0.050