PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-19:28:00
G02     51.4           40.2               18.1 +/-    0.79      26.3 +/-    0.79  0.050 / 0.080
G05     90.7           71.7               21.7 +/-    0.52      22.7 +/-    0.52  0.030 / 0.070
G12     187.2          42.3               25.3 +/-    1.54      35.5 +/-    1.54  0.270 / 0.640
G20     203.1          50.7               27.4 +/-    1.94      34.2 +/-    1.94  0.250 / 0.660
G21     264.1          12.4               23.3 +/-    3.79      61.6 +/-    3.79  0.050 / 0.060
G25     245.4          57.1               24.0 +/-    0.35      28.0 +/-    0.35  0.040 / 0.050
G29     324.5          49.2               20.3 +/-    0.94      25.9 +/-    0.94  0.020 / 0.030