PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-19:27:50
G05     49.9           16.4               16.3 +/-    1.35      39.1 +/-    1.35  0.040 / 0.070
G10     239.0          14.7               21.3 +/-    2.08      53.4 +/-    2.08  0.030 / 0.080
G13     72.1           37.0               18.3 +/-    0.69      28.1 +/-    0.69  0.210 / 0.550
G15     116.7          54.5               20.3 +/-    0.77      24.3 +/-    0.77  0.180 / 0.610
G16     314.3          11.3               15.8 +/-   13.54      42.8 +/-   13.54  0.110 / 0.250
G18     250.0          45.9               19.8 +/-    1.38      26.4 +/-    1.38  0.090 / 0.210
G20     31.0           62.7               19.2 +/-    0.60      21.3 +/-    0.60  0.060 / 0.110
G21     318.7          51.4               21.5 +/-    0.84      26.6 +/-    0.84  0.060 / 0.130
G26     287.7          18.7               18.5 +/-    1.95      42.1 +/-    1.95  0.040 / 0.050
G29     155.8          62.0               22.9 +/-    1.11      25.6 +/-    1.11  0.040 / 0.050