PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-06:42:30
G08     307.5          20.0                6.1 +/-    1.18      13.5 +/-    1.18  0.060 / 0.090
G10     340.2          61.2                5.8 +/-    0.63       6.5 +/-    0.63  0.060 / 0.080
G14     219.2          34.0                8.3 +/-    1.47      13.4 +/-    1.47  0.040 / 0.050
G20     43.2           59.1                9.9 +/-    1.85      11.3 +/-    1.85  0.040 / 0.060
G21     137.1          53.3                8.1 +/-    0.67       9.8 +/-    0.67  0.040 / 0.030
G24     70.0           29.3                6.8 +/-    2.38      12.1 +/-    2.38  0.040 / 0.030
G27     272.8          36.9                8.3 +/-    1.96      12.8 +/-    1.96  0.100 / 0.160
G32     225.3          51.0               10.0 +/-    2.73      12.5 +/-    2.73  0.130 / 0.150