PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-19:28:10
G02     235.8          71.1                9.8 +/-    1.34      10.3 +/-    1.34  0.030 / 0.060
G05     174.4          13.5               15.6 +/-    1.74      40.2 +/-    1.74  0.040 / 0.060
G06     41.2           58.5                9.5 +/-    0.51      10.9 +/-    0.51  0.160 / 0.440
G12     322.0          53.0                9.1 +/-    1.19      11.1 +/-    1.19  0.150 / 0.410
G17     72.3           20.3                9.2 +/-    1.33      20.1 +/-    1.33  0.090 / 0.160
G19     58.6           37.2                8.7 +/-    1.27      13.3 +/-    1.27  0.070 / 0.160
G24     247.9          35.5               11.1 +/-    1.39      17.4 +/-    1.39  0.060 / 0.270
G25     316.9          16.2                7.4 +/-    4.35      17.8 +/-    4.35  0.050 / 0.260