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                5.3 +/-    0.68      10.9 +/-    0.68  0.060 / 0.080
G06     177.7          28.0                6.9 +/-    2.39      12.7 +/-    2.39  0.050 / 0.080
G11     43.5           10.2                5.2 +/-    1.59      14.5 +/-    1.59  0.130 / 0.220
G13     249.5          28.5                4.5 +/-    1.28       8.1 +/-    1.28  0.090 / 0.180
G15     282.1          15.1                4.3 +/-    1.82      10.6 +/-    1.82  0.020 / 0.030
G17     342.8          76.6                6.0 +/-    0.46       6.2 +/-    0.46  0.030 / 0.030
G19     255.1          64.7                4.9 +/-    0.76       5.4 +/-    0.76  0.080 / 0.100
G28     58.1           51.2                5.5 +/-    0.61       6.8 +/-    0.61  0.090 / 0.110
G30     151.3          39.4                8.5 +/-    1.42      12.4 +/-    1.42  0.050 / 0.120