PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-02:42:30
G08     288.8          23.6                7.3 +/-    0.82      14.8 +/-    0.82  0.040 / 0.020
G10     10.9           63.3                8.7 +/-    1.16       9.6 +/-    1.16  0.030 / 0.030
G14     233.0          50.6                9.2 +/-    2.73      11.5 +/-    2.73  0.180 / 0.150
G18     65.5           50.7                7.0 +/-    1.20       8.8 +/-    1.20  0.220 / 0.140
G21     147.3          37.4                9.0 +/-    3.18      13.6 +/-    3.18  0.050 / 0.020
G24     54.9           25.5                7.2 +/-    3.48      13.9 +/-    3.48  0.030 / 0.020
G27     249.8          29.9                9.0 +/-    1.36      15.7 +/-    1.36  0.070 / 0.090
G32     250.7          68.3                6.3 +/-    0.61       6.8 +/-    0.61  0.070 / 0.100