PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-18:57:30
G02     31.5           57.1               14.5 +/-    0.77      16.9 +/-    0.77  0.040 / 0.040
G05     150.4          59.8               17.5 +/-    0.53      19.9 +/-    0.53  0.040 / 0.040
G06     54.0           16.1               11.7 +/-    2.47      28.2 +/-    2.47  0.030 / 0.040
G12     199.0          67.4               13.1 +/-    0.26      14.1 +/-    0.26  0.030 / 0.030
G20     198.0          27.2               17.0 +/-    2.16      31.6 +/-    2.16  0.150 / 0.160
G25     292.3          56.9               13.0 +/-    1.21      15.2 +/-    1.21  0.110 / 0.170
G29     308.8          30.6               14.7 +/-    1.44      25.4 +/-    1.44  0.030 / 0.030