PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-00:12:50
G08     263.7          17.3                8.5 +/-    1.01      20.0 +/-    1.01  0.100 / 0.280
G10     65.8           57.1                8.4 +/-    1.07       9.8 +/-    1.07  0.160 / 0.340
G11     309.4          19.2                5.9 +/-    1.22      13.3 +/-    1.22  0.040 / 0.040
G14     271.1          67.0                7.4 +/-    0.72       8.0 +/-    0.72  0.040 / 0.040
G18     310.7          34.7                6.3 +/-    1.82      10.0 +/-    1.82  0.220 / 0.430
G20     97.6           35.1                8.9 +/-    0.73      14.1 +/-    0.73  0.190 / 0.280
G21     155.1          13.1                9.2 +/-    1.71      23.9 +/-    1.71  0.080 / 0.220
G27     231.1          14.6                9.7 +/-    1.32      24.4 +/-    1.32  0.080 / 0.210
G31     177.5          33.2                9.4 +/-    2.51      15.5 +/-    2.51  0.150 / 0.180
G32     350.3          72.6                7.3 +/-    0.52       7.6 +/-    0.52  0.150 / 0.160