PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-15:13:10
G01     229.1          19.5               10.8 +/-    3.60      24.0 +/-    3.60  0.030 / 0.030
G03     289.6          68.6                8.7 +/-    1.10       9.3 +/-    1.10  0.030 / 0.030
G14     82.1           29.0                9.2 +/-    1.60      16.4 +/-    1.60  0.080 / 0.120
G16     148.5          42.2                9.9 +/-    1.06      13.9 +/-    1.06  0.080 / 0.160
G22     211.5          72.0               10.4 +/-    0.31      10.9 +/-    0.31  0.060 / 0.080
G23     306.9          38.1                7.5 +/-    1.53      11.3 +/-    1.53  0.050 / 0.050
G26     101.1          53.1               10.8 +/-    0.82      13.1 +/-    0.82  0.090 / 0.110
G31     44.4           33.6                7.3 +/-    1.06      11.8 +/-    1.06  0.050 / 0.100