PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-17:12:50
G03     206.2          55.2               10.5 +/-    0.93      12.5 +/-    0.93  0.240 / 0.300
G07     259.7          20.5               10.9 +/-    2.60      23.7 +/-    2.60  0.150 / 0.210
G09     310.8          28.8                7.7 +/-    1.82      13.8 +/-    1.82  0.060 / 0.100
G16     105.4          66.0               11.1 +/-    0.94      12.0 +/-    0.94  0.080 / 0.100
G22     185.7          37.7               10.5 +/-    1.35      15.8 +/-    1.35  0.260 / 0.390
G23     330.2          60.2                9.4 +/-    0.57      10.7 +/-    0.57  0.250 / 0.340
G26     55.3           46.1                9.6 +/-    1.19      12.7 +/-    1.19  0.050 / 0.060
G27     135.1          10.8                7.1 +/-   34.84      19.5 +/-   34.84  0.050 / 0.050
G31     59.7           11.1                9.3 +/-    2.62      25.4 +/-    2.62  0.040 / 0.040