PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-03:12:40
G08     309.9          19.1                6.8 +/-    1.83      15.3 +/-    1.83  0.070 / 0.130
G10     326.0          58.8                6.3 +/-    1.12       7.2 +/-    1.12  0.080 / 0.100
G14     217.0          30.6                8.3 +/-    2.13      14.3 +/-    2.13  0.030 / 0.030
G15     46.3           15.0                3.7 +/-    1.56       9.1 +/-    1.56  0.030 / 0.030
G18     31.9           61.3                4.7 +/-    0.46       5.3 +/-    0.46  0.070 / 0.170
G21     131.5          59.2                5.7 +/-    0.52       6.5 +/-    0.52  0.070 / 0.210
G24     78.0           30.6                5.4 +/-    0.69       9.3 +/-    0.69  0.060 / 0.080
G27     275.6          37.9                7.9 +/-    1.55      11.9 +/-    1.55  0.050 / 0.090
G32     221.8          49.4                6.1 +/-    1.72       7.8 +/-    1.72  0.030 / 0.060