PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-19:42:40
G02     39.4           50.2                9.7 +/-    0.46      12.2 +/-    0.46  0.020 / 0.040
G05     118.5          68.3               10.7 +/-    0.48      11.5 +/-    0.48  0.020 / 0.040
G12     185.9          54.1               11.0 +/-    1.83      13.2 +/-    1.83  0.030 / 0.050
G25     279.4          58.2               10.5 +/-    0.93      12.1 +/-    0.93  0.040 / 0.050
G29     313.0          33.8                8.3 +/-    1.16      13.5 +/-    1.16  0.040 / 0.050