PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-15:27:50
G02     67.9           25.3                8.5 +/-    1.47      16.5 +/-    1.47  0.030 / 0.040
G05     49.5           54.2                8.3 +/-    0.93       9.9 +/-    0.93  0.030 / 0.040
G12     184.1          23.7               10.8 +/-    2.03      21.7 +/-    2.03  0.080 / 0.170
G13     121.8          21.6                9.0 +/-    1.68      19.0 +/-    1.68  0.120 / 0.210
G15     157.6          20.2               11.8 +/-    1.40      26.0 +/-    1.40  0.040 / 0.030
G20     215.8          69.2               10.4 +/-    0.35      11.0 +/-    0.35  0.040 / 0.030
G21     280.4          26.2                7.2 +/-    1.67      13.7 +/-    1.67  0.090 / 0.120
G25     223.5          43.9               10.7 +/-    2.91      14.6 +/-    2.91  0.090 / 0.130
G29     343.2          69.6                8.2 +/-    0.47       8.7 +/-    0.47  0.120 / 0.080