PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-14:12:30
G03     204.8          55.9                6.9 +/-    0.78       8.2 +/-    0.78  0.040 / 0.070
G07     258.8          20.8                8.0 +/-    1.01      17.2 +/-    1.01  0.050 / 0.080
G09     309.7          26.8                4.0 +/-    1.89       7.5 +/-    1.89  0.090 / 0.190
G16     105.0          65.0                7.1 +/-    0.62       7.7 +/-    0.62  0.110 / 0.210
G22     185.3          38.7                8.2 +/-    1.19      12.2 +/-    1.19  0.100 / 0.110
G23     330.2          59.9                5.0 +/-    0.68       5.7 +/-    0.68  0.100 / 0.120
G26     55.7           45.6                4.3 +/-    0.61       5.7 +/-    0.61  0.030 / 0.040
G31     59.1           10.8                6.1 +/-    2.21      16.7 +/-    2.21  0.030 / 0.050