PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-01:27:50
G08     319.0          12.7                6.0 +/-    1.16      15.6 +/-    1.16  0.030 / 0.040
G10     305.3          53.9                8.0 +/-    1.17       9.7 +/-    1.17  0.030 / 0.050
G14     211.8          19.0               11.7 +/-    2.35      26.3 +/-    2.35  0.080 / 0.120
G15     45.7           24.7                7.1 +/-    1.52      14.0 +/-    1.52  0.100 / 0.120
G18     8.8            65.0                7.0 +/-    0.87       7.6 +/-    0.87  0.050 / 0.060
G20     76.1           13.2                7.8 +/-    1.24      20.4 +/-    1.24  0.050 / 0.050
G21     112.5          69.7               10.4 +/-    0.89      11.1 +/-    0.89  0.070 / 0.080
G24     92.5           28.6                9.1 +/-    1.16      16.4 +/-    1.16  0.050 / 0.080
G27     291.7          37.1                8.1 +/-    1.97      12.4 +/-    1.97  0.100 / 0.540
G32     213.9          36.6               12.2 +/-    3.14      18.9 +/-    3.14  0.110 / 0.470