PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-17:42:40
G02     329.5          79.8               12.2 +/-    0.69      12.3 +/-    0.69  0.060 / 0.100
G05     169.5          29.1               17.3 +/-    1.84      30.9 +/-    1.84  0.070 / 0.130
G06     41.6           41.3               11.4 +/-    0.59      16.2 +/-    0.59  0.110 / 0.280
G12     312.0          70.8               12.6 +/-    0.71      13.3 +/-    0.71  0.090 / 0.240
G19     76.0           25.9               13.8 +/-    1.06      26.4 +/-    1.06  0.030 / 0.030
G24     230.5          23.7               13.1 +/-    1.16      26.3 +/-    1.16  0.030 / 0.040
G25     317.0          32.1               12.6 +/-    2.38      21.2 +/-    2.38  0.070 / 0.110
G29     286.9          10.7               -1.7 +/-   28.11      -4.8 +/-   28.11  0.060 / 0.120