PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-18:43:10
G02     46.0           44.7               14.3 +/-    0.71      19.3 +/-    0.71  0.030 / 0.040
G05     112.9          71.1               15.6 +/-    0.22      16.4 +/-    0.22  0.030 / 0.040
G12     189.3          50.1               16.0 +/-    0.75      20.2 +/-    0.75  0.060 / 0.050
G20     201.1          43.1               15.5 +/-    0.81      21.5 +/-    0.81  0.060 / 0.050
G25     260.2          59.5               14.3 +/-    1.75      16.3 +/-    1.75  0.030 / 0.030
G29     320.0          43.5               14.0 +/-    0.59      19.3 +/-    0.59  0.030 / 0.020