PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-08:43:00
G08     272.6          20.3                7.6 +/-    2.26      16.6 +/-    2.26  0.110 / 0.330
G10     52.5           59.4                4.9 +/-    0.64       5.6 +/-    0.64  0.100 / 0.390
G14     255.8          63.6                6.8 +/-    0.64       7.5 +/-    0.64  0.130 / 0.150
G18     314.5          29.0                7.8 +/-    1.44      13.9 +/-    1.44  0.100 / 0.200
G20     90.1           40.0                6.0 +/-    0.71       8.8 +/-    0.71  0.030 / 0.030
G21     153.6          19.4                5.9 +/-    2.12      13.1 +/-    2.12  0.030 / 0.030
G24     41.7           12.9                1.8 +/-    1.78       4.6 +/-    1.78  0.050 / 0.060
G27     237.3          20.1                7.3 +/-    2.13      16.1 +/-    2.13  0.050 / 0.080
G31     179.6          24.5                6.2 +/-    0.92      12.2 +/-    0.92  0.110 / 0.220
G32     298.6          74.6                7.6 +/-    0.53       7.9 +/-    0.53  0.090 / 0.280