PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-23:42:20
G02     230.3          72.0                9.5 +/-    0.82       9.9 +/-    0.82  0.070 / 0.100
G05     173.0          12.2               18.3 +/-    1.90      48.7 +/-    1.90  0.070 / 0.090
G06     42.7           66.8                8.8 +/-    0.59       9.4 +/-    0.59  0.030 / 0.050
G12     320.2          43.8                9.6 +/-    2.08      13.1 +/-    2.08  0.030 / 0.060
G17     66.5           24.8               10.0 +/-    0.86      19.6 +/-    0.86  0.060 / 0.060
G19     51.5           41.6                9.3 +/-    0.51      13.2 +/-    0.51  0.050 / 0.060
G24     249.7          37.4               11.3 +/-    0.96      17.2 +/-    0.96  0.140 / 0.240