PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-19:42:30
G05     50.5           14.7                7.1 +/-    2.74      17.8 +/-    2.74  0.070 / 0.060
G10     240.0          17.0               10.8 +/-    1.68      25.6 +/-    1.68  0.040 / 0.050
G13     68.1           35.2                9.2 +/-    1.34      14.5 +/-    1.34  0.090 / 0.350
G15     124.0          55.5                9.8 +/-    0.73      11.7 +/-    0.73  0.090 / 0.390
G16     308.4          14.4                4.2 +/-    2.01      10.7 +/-    2.01  0.130 / 0.220
G20     253.7          41.3                9.4 +/-    2.74      13.4 +/-    2.74  0.170 / 0.220
G21     319.0          50.9                8.0 +/-    1.11      10.0 +/-    1.11  0.080 / 0.090
G26     281.2          19.6                7.7 +/-    2.17      17.0 +/-    2.17  0.080 / 0.110
G29     159.4          66.3                9.7 +/-    0.31      10.5 +/-    0.31  0.040 / 0.040