PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-18:12:40
G02     234.3          71.3               10.3 +/-    0.70      10.8 +/-    0.70  0.030 / 0.060
G05     175.6          11.9               12.4 +/-    3.53      33.2 +/-    3.53  0.030 / 0.070
G06     41.4           60.1                9.5 +/-    0.80      10.7 +/-    0.80  0.120 / 0.440
G12     321.8          51.2               10.3 +/-    0.70      12.9 +/-    0.70  0.120 / 0.480
G17     71.4           20.9                7.7 +/-    1.83      16.6 +/-    1.83  0.060 / 0.100
G19     57.5           37.9                8.6 +/-    1.21      13.0 +/-    1.21  0.070 / 0.110
G24     249.1          36.1               11.9 +/-    1.35      18.6 +/-    1.35  0.100 / 0.160
G25     316.7          15.2                9.3 +/-    3.57      23.1 +/-    3.57  0.070 / 0.160