PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-21:12:40
G01     41.1           16.3               11.2 +/-    2.68      27.0 +/-    2.68  0.240 / 0.390
G06     174.2          40.0               20.8 +/-    0.94      30.3 +/-    0.94  0.200 / 0.280
G13     237.7          21.9               21.2 +/-    2.14      44.6 +/-    2.14  0.080 / 0.130
G15     271.1          12.2               17.9 +/-    3.16      47.5 +/-    3.16  0.080 / 0.160
G17     351.8          72.1               16.2 +/-    0.35      17.0 +/-    0.35  0.220 / 0.190
G19     275.3          68.0               16.4 +/-    0.60      17.6 +/-    0.60  0.440 / 0.230
G24     316.4          19.6               11.8 +/-    2.18      26.2 +/-    2.18  0.080 / 0.080
G28     72.2           46.6               14.6 +/-    1.65      19.3 +/-    1.65  0.070 / 0.080
G30     154.4          26.5               19.8 +/-    1.64      37.5 +/-    1.64  0.200 / 0.170