PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-14:27:50
G02     240.8          75.7                7.7 +/-    0.51       8.0 +/-    0.51  0.110 / 0.340
G05     174.2          14.1                9.3 +/-    1.29      23.7 +/-    1.29  0.110 / 0.370
G06     40.5           60.3                7.2 +/-    0.72       8.2 +/-    0.72  0.030 / 0.050
G12     321.5          51.4                7.7 +/-    1.45       9.6 +/-    1.45  0.030 / 0.050
G17     72.6           20.1                7.6 +/-    0.80      16.6 +/-    0.80  0.080 / 0.150
G19     59.0           37.0                6.6 +/-    0.83      10.1 +/-    0.83  0.080 / 0.160
G24     247.0          35.0                9.6 +/-    0.92      15.3 +/-    0.92  0.100 / 0.290
G25     316.9          14.6                5.5 +/-    2.80      13.7 +/-    2.80  0.070 / 0.240