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               17.3 +/-    0.56      18.3 +/-    0.56  0.350 / 0.400
G06     42.8           64.0               16.7 +/-    0.34      18.4 +/-    0.34  0.410 / 0.370
G12     321.4          47.3               16.1 +/-    0.46      21.0 +/-    0.46  0.080 / 0.080
G17     68.8           22.8               14.4 +/-    2.17      29.6 +/-    2.17  0.100 / 0.070
G19     54.3           39.9               16.0 +/-    1.17      23.4 +/-    1.17  0.030 / 0.050
G24     252.7          37.6               15.7 +/-    2.27      23.7 +/-    2.27  0.030 / 0.040
G25     316.0          11.6                0.9 +/-   41.66       2.4 +/-   41.66  0.070 / 0.120