PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-22:12:40
G01     305.6          34.1                7.1 +/-    1.65      11.4 +/-    1.65  0.090 / 0.160
G10     107.5          39.6                9.8 +/-    0.64      14.4 +/-    0.64  0.110 / 0.150
G11     280.0          28.6                7.2 +/-    1.41      12.9 +/-    1.41  0.070 / 0.090
G14     2.1            65.8                7.5 +/-    0.54       8.1 +/-    0.54  0.100 / 0.110
G18     118.5          12.2               10.6 +/-    2.40      28.2 +/-    2.40  0.130 / 0.150
G22     309.9          26.2                7.8 +/-    1.86      14.8 +/-    1.86  0.090 / 0.130
G25     79.6           16.9               10.4 +/-    1.99      24.7 +/-    1.99  0.020 / 0.030
G31     171.5          64.3               10.4 +/-    0.70      11.4 +/-    0.70  0.030 / 0.030
G32     35.9           52.8                7.4 +/-    1.14       9.0 +/-    1.14  0.030 / 0.030