PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-04:12:40
G01     312.6          28.2                5.0 +/-    0.91       9.1 +/-    0.91  0.090 / 0.230
G10     96.9           46.4                5.5 +/-    0.47       7.2 +/-    0.47  0.130 / 0.220
G11     288.2          29.0                3.8 +/-    0.82       6.8 +/-    0.82  0.090 / 0.160
G14     342.8          69.6                4.6 +/-    0.73       4.9 +/-    0.73  0.100 / 0.150
G18     111.6          21.1                5.5 +/-    1.16      11.9 +/-    1.16  0.030 / 0.050
G22     306.5          20.2                5.5 +/-    2.67      12.1 +/-    2.67  0.040 / 0.040
G25     85.2           13.7                5.9 +/-    1.39      15.2 +/-    1.39  0.040 / 0.050
G31     172.9          55.8                7.5 +/-    0.88       8.8 +/-    0.88  0.030 / 0.050
G32     24.9           59.2                3.9 +/-    0.31       4.5 +/-    0.31  0.080 / 0.170