PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-17:27:50
G08     307.5          20.1                8.9 +/-    1.22      19.6 +/-    1.22  0.070 / 0.080
G10     341.1          61.2                7.4 +/-    0.62       8.3 +/-    0.62  0.060 / 0.080
G14     219.1          28.2               10.6 +/-    1.83      19.3 +/-    1.83  0.090 / 0.180
G20     46.9           57.4                8.6 +/-    0.52      10.0 +/-    0.52  0.080 / 0.230
G21     136.8          54.4               10.7 +/-    1.13      12.8 +/-    1.13  0.030 / 0.050
G24     72.7           30.5                8.2 +/-    0.96      14.3 +/-    0.96  0.030 / 0.040
G27     271.6          37.5                9.0 +/-    1.20      13.7 +/-    1.20  0.050 / 0.040
G32     224.7          56.4                9.5 +/-    0.81      11.1 +/-    0.81  0.030 / 0.040