PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-19:27:30
G02     57.5           35.0               18.5 +/-    0.77      29.3 +/-    0.77  0.060 / 0.090
G05     67.7           67.7               20.5 +/-    0.45      22.0 +/-    0.45  0.050 / 0.120
G12     185.6          34.5               21.6 +/-    2.00      34.6 +/-    2.00  0.110 / 0.550
G13     131.5          13.7               23.4 +/-    1.56      60.0 +/-    1.56  0.120 / 0.360
G15     165.3          10.1               -6.0 +/-   32.81     -16.8 +/-   32.81  0.120 / 0.480
G20     206.2          58.6               23.5 +/-    0.87      27.0 +/-    0.87  0.150 / 0.450
G21     269.8          17.0               17.8 +/-    3.74      42.1 +/-    3.74  0.060 / 0.060
G25     233.6          52.5               20.5 +/-    0.97      25.1 +/-    0.97  0.060 / 0.060
G29     329.8          56.0               19.2 +/-    0.96      22.6 +/-    0.96  0.040 / 0.090