PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-16:57:40
G02     273.3          80.1               17.8 +/-    0.91      18.0 +/-    0.91  0.190 / 0.170
G05     172.5          20.6               18.9 +/-    1.32      40.9 +/-    1.32  0.110 / 0.210
G06     40.0           50.3               17.4 +/-    0.76      21.9 +/-    0.76  0.080 / 0.130
G12     320.0          61.1               15.4 +/-    0.79      17.3 +/-    0.79  0.100 / 0.170
G17     79.8           14.8               16.5 +/-    2.60      41.2 +/-    2.60  0.030 / 0.040
G19     67.5           31.5               16.6 +/-    1.94      28.1 +/-    1.94  0.030 / 0.040
G24     238.4          29.9               15.2 +/-    1.77      26.6 +/-    1.77  0.130 / 0.170
G25     317.7          23.4               15.9 +/-    1.38      32.3 +/-    1.38  0.120 / 0.180