PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-17:42:40
G05     50.7           14.9                8.1 +/-    2.99      20.3 +/-    2.99  0.050 / 0.070
G10     240.9          18.1               11.5 +/-    1.85      26.5 +/-    1.85  0.040 / 0.080
G13     66.5           34.8                8.8 +/-    0.93      14.0 +/-    0.93  0.100 / 0.390
G15     118.7          56.3               10.3 +/-    0.62      12.1 +/-    0.62  0.120 / 0.460
G16     307.7          14.4                6.0 +/-    1.94      15.1 +/-    1.94  0.050 / 0.150
G20     255.1          42.3                9.3 +/-    0.99      13.0 +/-    0.99  0.050 / 0.130
G21     321.2          52.4               10.3 +/-    1.79      12.7 +/-    1.79  0.140 / 0.350
G26     280.7          19.2                6.7 +/-    0.94      15.1 +/-    0.94  0.110 / 0.280
G29     159.5          64.2               11.1 +/-    0.92      12.2 +/-    0.92  0.040 / 0.050