PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-21:57:50
G01     309.8          31.0                8.1 +/-    2.73      13.8 +/-    2.73  0.060 / 0.160
G10     102.2          43.1               10.3 +/-    0.69      14.2 +/-    0.69  0.060 / 0.170
G11     285.6          28.3                7.4 +/-    0.65      13.5 +/-    0.65  0.070 / 0.140
G14     350.8          68.2                8.2 +/-    1.08       8.8 +/-    1.08  0.070 / 0.110
G18     115.3          15.8               10.9 +/-    1.15      26.5 +/-    1.15  0.050 / 0.050
G22     308.1          22.3                6.9 +/-    0.97      14.4 +/-    0.97  0.040 / 0.040
G25     84.6           15.5               10.0 +/-    1.25      24.6 +/-    1.25  0.050 / 0.200
G31     174.2          58.7               11.4 +/-    0.51      13.1 +/-    0.51  0.050 / 0.220
G32     30.1           56.3                7.0 +/-    0.64       8.2 +/-    0.64  0.030 / 0.050