PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-17:57:30
G02     35.8           53.3                8.6 +/-    0.50      10.5 +/-    0.50  0.030 / 0.040
G05     128.3          66.6                9.5 +/-    1.33      10.3 +/-    1.33  0.030 / 0.030
G06     58.0           9.2                 7.9 +/-    2.07      22.4 +/-    2.07  0.030 / 0.050
G12     185.5          56.8               10.9 +/-    1.72      12.7 +/-    1.72  0.030 / 0.050
G25     284.8          57.6                9.2 +/-    0.81      10.6 +/-    0.81  0.070 / 0.300
G29     310.8          31.3                6.6 +/-    1.16      11.3 +/-    1.16  0.040 / 0.050