PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-17:42:50
G08     320.5          11.4                0.2 +/-   25.50       0.5 +/-   25.50  0.180 / 0.430
G10     303.0          53.8                7.0 +/-    0.97       8.5 +/-    0.97  0.180 / 0.340
G14     210.9          15.1               11.7 +/-    3.04      29.0 +/-    3.04  0.030 / 0.040
G15     46.0           27.1                6.1 +/-    1.68      11.4 +/-    1.68  0.030 / 0.040
G20     0.9            65.1                7.2 +/-    0.61       7.9 +/-    0.61  0.100 / 0.120
G21     108.8          69.8                9.7 +/-    0.44      10.3 +/-    0.44  0.100 / 0.110
G24     89.2           27.0                9.3 +/-    1.37      17.3 +/-    1.37  0.260 / 0.370
G27     298.7          34.3                6.6 +/-    2.94      10.5 +/-    2.94  0.230 / 0.420
G32     212.0          35.1                8.8 +/-    1.74      14.0 +/-    1.74  0.070 / 0.090