PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-13:27:50
G01     47.4           23.2                5.6 +/-    2.17      11.4 +/-    2.17  0.070 / 0.150
G06     177.7          28.0                7.4 +/-    1.14      13.5 +/-    1.14  0.080 / 0.170
G11     43.5           10.2                5.6 +/-    3.48      15.5 +/-    3.48  0.050 / 0.060
G13     249.5          28.5                4.0 +/-    2.16       7.2 +/-    2.16  0.050 / 0.060
G15     282.1          15.1                3.7 +/-    2.11       9.2 +/-    2.11  0.130 / 0.360
G17     342.8          76.6                5.9 +/-    0.77       6.1 +/-    0.77  0.080 / 0.270
G19     255.1          64.7                5.8 +/-    0.58       6.4 +/-    0.58  0.020 / 0.030
G28     58.1           51.2                5.6 +/-    0.64       7.0 +/-    0.64  0.020 / 0.020
G30     151.3          39.4                7.7 +/-    0.58      11.2 +/-    0.58  0.130 / 0.200