PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-19:43:00
G02     56.9           35.6               16.8 +/-    0.65      26.3 +/-    0.65  0.030 / 0.110
G05     70.2           68.7               21.0 +/-    0.55      22.4 +/-    0.55  0.060 / 0.100
G12     185.7          35.1               26.6 +/-    2.15      42.2 +/-    2.15  0.160 / 0.450
G13     131.9          13.3               30.0 +/-    1.97      77.6 +/-    1.97  0.110 / 0.440
G20     205.9          58.1               27.2 +/-    0.99      31.4 +/-    0.99  0.040 / 0.060
G21     269.2          16.5               24.2 +/-    3.82      57.9 +/-    3.82  0.040 / 0.070
G25     234.2          52.9               24.0 +/-    1.16      29.2 +/-    1.16  0.020 / 0.030
G29     329.2          55.3               19.9 +/-    0.68      23.6 +/-    0.68  0.040 / 0.030