PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-21:12:40
G05     46.5           26.3               16.6 +/-    1.53      31.5 +/-    1.53  0.050 / 0.090
G13     85.3           37.3               20.8 +/-    0.70      31.7 +/-    0.70  0.050 / 0.090
G15     133.0          48.0               22.7 +/-    1.06      29.4 +/-    1.06  0.110 / 0.250
G18     240.4          37.5               19.8 +/-    1.73      30.1 +/-    1.73  0.090 / 0.250
G20     23.1           71.4               19.6 +/-    0.84      20.6 +/-    0.84  0.110 / 0.400
G21     308.2          44.2               20.3 +/-    1.50      27.6 +/-    1.50  0.120 / 0.450
G25     199.5          13.3               26.8 +/-    2.97      69.6 +/-    2.97  0.050 / 0.110
G26     296.3          19.3               18.9 +/-    1.36      42.3 +/-    1.36  0.070 / 0.130
G29     147.9          74.8               21.2 +/-    0.81      21.9 +/-    0.81  0.050 / 0.130