PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-18:27:40
G02     29.4           58.8               18.3 +/-    0.98      21.0 +/-    0.98  0.060 / 0.050
G05     153.0          57.5               21.1 +/-    0.54      24.5 +/-    0.54  0.100 / 0.050
G06     52.6           18.1               13.3 +/-    3.02      30.6 +/-    3.02  0.030 / 0.030
G12     202.9          70.1               15.4 +/-    0.48      16.3 +/-    0.48  0.020 / 0.030
G19     99.2           9.5                17.1 +/-    2.09      48.0 +/-    2.09  0.300 / 0.250
G20     197.8          24.6               18.9 +/-    2.84      37.3 +/-    2.84  0.240 / 0.210
G25     296.6          55.2               15.0 +/-    3.66      17.8 +/-    3.66  0.030 / 0.040
G29     307.3          29.0               16.1 +/-    1.15      28.7 +/-    1.15  0.030 / 0.030