PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-19:42:40
G05     51.2           13.3                6.3 +/-    3.50      16.4 +/-    3.50  0.040 / 0.050
G10     241.3          18.4               11.6 +/-    2.45      26.5 +/-    2.45  0.060 / 0.060
G13     65.9           34.7                8.4 +/-    1.84      13.4 +/-    1.84  0.080 / 0.350
G15     120.7          56.5               10.2 +/-    0.71      11.9 +/-    0.71  0.080 / 0.390
G16     306.7          14.8                6.1 +/-    1.84      15.2 +/-    1.84  0.150 / 0.230
G20     255.6          42.6               10.9 +/-    2.14      15.2 +/-    2.14  0.120 / 0.140
G21     320.9          52.1                9.8 +/-    0.83      12.0 +/-    0.83  0.070 / 0.100
G26     279.3          19.2                9.4 +/-    1.75      21.0 +/-    1.75  0.080 / 0.120
G29     160.4          64.1               10.8 +/-    0.66      11.9 +/-    0.66  0.040 / 0.040