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               12.5 +/-    0.93      14.4 +/-    0.93  0.050 / 0.040
G05     147.5          60.5               13.3 +/-    0.48      15.0 +/-    0.48  0.060 / 0.070
G06     54.2           15.6                8.7 +/-    2.32      21.2 +/-    2.32  0.050 / 0.050
G12     197.4          66.9               12.3 +/-    0.25      13.3 +/-    0.25  0.040 / 0.050
G20     197.7          27.6               13.9 +/-    2.06      25.6 +/-    2.06  0.030 / 0.070
G25     290.9          57.7               10.6 +/-    3.01      12.3 +/-    3.01  0.030 / 0.090
G29     308.4          29.8               11.2 +/-    1.52      19.7 +/-    1.52  0.030 / 0.040