PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-19:42:30
G08     305.2          20.6                8.4 +/-    1.38      18.1 +/-    1.38  0.070 / 0.080
G10     348.5          61.9                8.3 +/-    0.30       9.3 +/-    0.30  0.100 / 0.080
G14     221.1          32.8               10.3 +/-    1.72      17.1 +/-    1.72  0.150 / 0.170
G20     51.7           56.3                8.6 +/-    1.45      10.1 +/-    1.45  0.080 / 0.170
G21     140.0          51.6               10.2 +/-    0.62      12.6 +/-    0.62  0.040 / 0.050
G24     68.5           29.9                8.9 +/-    1.20      15.6 +/-    1.20  0.050 / 0.060
G27     267.0          36.6               10.0 +/-    1.70      15.4 +/-    1.70  0.130 / 0.340
G32     228.7          59.5               11.3 +/-    1.78      12.9 +/-    1.78  0.130 / 0.290