PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-20:12:40
G01     306.2          33.7               10.3 +/-    1.96      16.7 +/-    1.96  0.080 / 0.170
G10     106.9          40.0               11.1 +/-    0.59      16.1 +/-    0.59  0.110 / 0.160
G11     281.6          28.1               11.1 +/-    0.68      20.2 +/-    0.68  0.110 / 0.100
G14     359.3          66.4                9.7 +/-    0.42      10.4 +/-    0.42  0.090 / 0.120
G18     118.3          12.1               13.3 +/-    1.31      35.4 +/-    1.31  0.030 / 0.030
G22     309.8          26.1               11.0 +/-    2.32      21.0 +/-    2.32  0.030 / 0.030
G25     81.0           16.9               10.7 +/-    1.74      25.5 +/-    1.74  0.030 / 0.030
G31     169.2          64.8               13.8 +/-    0.53      15.0 +/-    0.53  0.030 / 0.040
G32     36.2           52.4                9.4 +/-    1.11      11.5 +/-    1.11  0.050 / 0.040