PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-18:13:10
G02     22.5           63.8               16.9 +/-    0.53      18.6 +/-    0.53  0.090 / 0.060
G05     158.7          51.1               20.8 +/-    0.42      25.9 +/-    0.42  0.100 / 0.070
G06     49.5           23.0               13.0 +/-    2.22      26.6 +/-    2.22  0.020 / 0.020
G12     218.3          76.1               13.9 +/-    1.22      14.3 +/-    1.22  0.030 / 0.020
G19     94.2           13.3               15.7 +/-    1.97      40.7 +/-    1.97  0.200 / 0.440
G20     197.4          18.6               19.1 +/-    1.85      43.6 +/-    1.85  0.270 / 0.360
G25     304.8          50.7               15.0 +/-    4.35      18.8 +/-    4.35  0.050 / 0.050
G29     302.8          24.6               13.8 +/-    1.71      27.1 +/-    1.71  0.040 / 0.040