PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-18:57:20
G02     31.5           57.1               14.5 +/-    0.51      16.9 +/-    0.51  0.030 / 0.040
G05     150.4          59.8               17.2 +/-    0.94      19.6 +/-    0.94  0.030 / 0.040
G06     54.0           16.1               11.2 +/-    1.82      27.1 +/-    1.82  0.040 / 0.060
G12     199.0          67.4               14.2 +/-    1.15      15.2 +/-    1.15  0.050 / 0.060
G20     198.0          27.2               16.7 +/-    2.50      31.0 +/-    2.50  0.050 / 0.110
G25     292.3          56.9               14.2 +/-    0.66      16.6 +/-    0.66  0.060 / 0.100
G29     308.8          30.6               13.3 +/-    1.76      23.0 +/-    1.76  0.030 / 0.060