PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-20:27:40
G02     37.4           52.3               12.0 +/-    0.51      14.7 +/-    0.51  0.030 / 0.050
G05     134.9          66.7               14.9 +/-    0.78      16.0 +/-    0.78  0.030 / 0.050
G06     58.3           10.4               10.9 +/-    1.76      30.2 +/-    1.76  0.040 / 0.050
G12     191.8          58.8               13.7 +/-    1.81      15.7 +/-    1.81  0.040 / 0.060
G20     198.8          35.0               17.0 +/-    1.08      26.9 +/-    1.08  0.050 / 0.100
G25     276.3          60.2               13.4 +/-    1.11      15.2 +/-    1.11  0.060 / 0.100
G29     313.5          35.5               11.9 +/-    1.37      18.7 +/-    1.37  0.040 / 0.050