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                6.1 +/-    1.43      13.7 +/-    1.43  0.110 / 0.060
G10     326.0          58.8                5.3 +/-    0.69       6.1 +/-    0.69  0.060 / 0.050
G14     217.0          30.6                8.7 +/-    1.37      15.0 +/-    1.37  0.040 / 0.050
G15     46.3           15.0                3.4 +/-    3.16       8.4 +/-    3.16  0.040 / 0.040
G18     31.9           61.3                6.1 +/-    1.29       6.8 +/-    1.29  0.060 / 0.090
G21     131.5          59.2                6.3 +/-    0.37       7.2 +/-    0.37  0.080 / 0.090
G24     78.0           30.6                4.6 +/-    0.78       8.0 +/-    0.78  0.030 / 0.030
G27     275.6          37.9                6.7 +/-    1.76      10.0 +/-    1.76  0.030 / 0.030
G32     221.8          49.4                5.3 +/-    1.98       6.7 +/-    1.98  0.040 / 0.060