PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-19:28:00
G01     317.2          23.5                8.4 +/-    2.04      17.0 +/-    2.04  0.260 / 0.300
G08     254.1          11.6                7.2 +/-   18.60      19.4 +/-   18.60  0.270 / 0.280
G10     86.4           49.0                9.2 +/-    1.35      11.8 +/-    1.35  0.040 / 0.040
G11     302.6          22.0                8.2 +/-    1.77      17.2 +/-    1.77  0.050 / 0.050
G14     294.1          68.9                8.9 +/-    1.03       9.5 +/-    1.03  0.240 / 0.410
G20     109.6          23.7               10.6 +/-    1.35      21.3 +/-    1.35  0.200 / 0.340
G22     302.7          11.7                6.0 +/-   11.06      16.1 +/-   11.06  0.280 / 0.470
G25     98.5           9.6               -11.0 +/-   33.48     -31.1 +/-   33.48  0.210 / 0.340
G31     174.7          46.0               11.7 +/-    0.86      15.5 +/-    0.86  0.040 / 0.060
G32     17.2           63.9                9.8 +/-    0.75      10.8 +/-    0.75  0.040 / 0.060