PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-18:12:30
G02     35.6           53.7               16.9 +/-    0.32      20.4 +/-    0.32  0.040 / 0.040
G05     143.8          63.5               20.0 +/-    0.51      22.1 +/-    0.51  0.040 / 0.050
G06     55.9           13.8               12.0 +/-    1.46      30.8 +/-    1.46  0.030 / 0.050
G12     196.0          63.7               15.5 +/-    0.65      17.1 +/-    0.65  0.030 / 0.050
G20     198.6          30.6               19.8 +/-    3.13      34.2 +/-    3.13  0.080 / 0.190
G25     286.4          58.1               16.6 +/-    0.91      19.2 +/-    0.91  0.080 / 0.150
G29     311.7          33.9               14.6 +/-    1.86      23.6 +/-    1.86  0.040 / 0.050