PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-20:12:50
G05     50.5           15.5               14.8 +/-    1.70      36.4 +/-    1.70  0.180 / 0.240
G10     240.2          16.0               20.8 +/-    1.39      50.6 +/-    1.39  0.240 / 0.310
G13     69.8           36.7               18.2 +/-    0.90      28.1 +/-    0.90  0.140 / 0.170
G15     114.0          55.4               19.1 +/-    0.87      22.7 +/-    0.87  0.110 / 0.160
G16     312.3          12.0               12.5 +/-   13.46      33.5 +/-   13.46  0.050 / 0.070
G18     251.8          47.0               18.5 +/-    4.80      24.2 +/-    4.80  0.060 / 0.060
G20     32.9           60.7               17.5 +/-    0.82      19.8 +/-    0.82  0.050 / 0.030
G21     320.2          52.3               15.4 +/-    0.71      18.9 +/-    0.71  0.060 / 0.040
G26     285.4          18.6               15.0 +/-    1.28      34.1 +/-    1.28  0.210 / 0.150
G29     157.2          60.5               20.7 +/-    0.43      23.4 +/-    0.43  0.210 / 0.140