PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-16:42:50
G02     258.0          78.6                8.9 +/-    0.34       9.1 +/-    0.34  0.240 / 0.290
G05     173.4          17.9               16.0 +/-    2.76      37.1 +/-    2.76  0.230 / 0.280
G06     40.0           53.4                9.2 +/-    0.77      11.1 +/-    0.77  0.040 / 0.040
G12     321.0          57.9                9.4 +/-    0.79      10.9 +/-    0.79  0.030 / 0.040
G17     77.3           16.6                7.4 +/-    2.09      17.6 +/-    2.09  0.120 / 0.180
G19     64.6           33.4                7.5 +/-    1.72      12.3 +/-    1.72  0.170 / 0.190
G24     241.3          31.8                8.1 +/-    0.94      13.7 +/-    0.94  0.040 / 0.040
G25     317.6          20.6               10.0 +/-    2.76      21.7 +/-    2.76  0.050 / 0.040