PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-20:27:20
G02     30.1           58.1               12.7 +/-    0.52      14.6 +/-    0.52  0.030 / 0.040
G05     147.5          60.5               14.1 +/-    0.50      16.0 +/-    0.50  0.030 / 0.040
G06     54.2           15.6                8.7 +/-    0.67      21.3 +/-    0.67  0.090 / 0.120
G12     197.4          66.9               12.3 +/-    0.84      13.3 +/-    0.84  0.120 / 0.100
G20     197.7          27.6               14.0 +/-    2.50      25.7 +/-    2.50  0.030 / 0.060
G25     290.9          57.7               11.9 +/-    0.79      13.8 +/-    0.79  0.030 / 0.050
G29     308.4          29.8               10.5 +/-    0.89      18.4 +/-    0.89  0.030 / 0.040