PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-19:28:10
G02     56.3           36.0               20.2 +/-    1.36      31.5 +/-    1.36  0.050 / 0.090
G05     71.1           68.6               22.5 +/-    0.43      24.0 +/-    0.43  0.050 / 0.070
G12     185.9          36.0               24.6 +/-    1.51      38.4 +/-    1.51  0.100 / 0.400
G13     132.5          12.8               31.7 +/-    3.55      83.2 +/-    3.55  0.190 / 0.430
G20     205.5          57.1               25.3 +/-    0.55      29.5 +/-    0.55  0.030 / 0.070
G21     268.7          16.1               22.3 +/-    1.32      54.1 +/-    1.32  0.060 / 0.080
G25     235.6          53.5               21.9 +/-    2.28      26.5 +/-    2.28  0.040 / 0.040
G29     328.7          54.7               20.8 +/-    0.65      24.8 +/-    0.65  0.040 / 0.050