PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-04:58:10
G03     257.6          69.5                7.8 +/-    0.62       8.3 +/-    0.62  0.040 / 0.050
G09     302.2          19.1                6.7 +/-    1.73      15.0 +/-    1.73  0.040 / 0.040
G14     95.4           18.3                6.1 +/-    0.94      14.0 +/-    0.94  0.100 / 0.270
G16     131.4          55.5                8.7 +/-    0.54      10.3 +/-    0.54  0.100 / 0.230
G22     200.8          60.9                7.9 +/-    0.90       8.9 +/-    0.90  0.040 / 0.080
G23     315.0          44.6                6.6 +/-    1.45       8.9 +/-    1.45  0.060 / 0.070
G26     75.8           52.8                6.2 +/-    1.28       7.6 +/-    1.28  0.040 / 0.070
G31     50.1           22.6                3.4 +/-    0.60       7.0 +/-    0.60  0.040 / 0.060