PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-16:28:00
G02     229.3          69.8               17.5 +/-    0.94      18.5 +/-    0.94  0.060 / 0.090
G06     42.8           64.0               17.2 +/-    0.61      18.9 +/-    0.61  0.070 / 0.120
G12     321.4          47.3               15.7 +/-    1.19      20.5 +/-    1.19  0.030 / 0.060
G17     68.8           22.8               15.5 +/-    0.81      31.8 +/-    0.81  0.030 / 0.050
G19     54.3           39.9               16.4 +/-    0.67      23.9 +/-    0.67  0.150 / 0.440
G24     252.7          37.6               16.1 +/-    0.77      24.4 +/-    0.77  0.170 / 0.370
G25     316.0          11.6                6.8 +/-   40.05      18.4 +/-   40.05  0.040 / 0.030