PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-20:12:30
G02     27.0           60.4               12.1 +/-    0.63      13.7 +/-    0.63  0.030 / 0.040
G05     151.6          57.5               15.9 +/-    0.25      18.4 +/-    0.25  0.050 / 0.050
G06     52.5           17.9               10.7 +/-    2.27      24.8 +/-    2.27  0.030 / 0.040
G12     201.7          70.2               12.8 +/-    0.57      13.6 +/-    0.57  0.020 / 0.030
G19     98.7           9.8                12.7 +/-    1.16      35.7 +/-    1.16  0.040 / 0.050
G20     197.5          24.5               16.9 +/-    4.01      33.3 +/-    4.01  0.050 / 0.050
G25     296.2          55.9               11.4 +/-    1.85      13.5 +/-    1.85  0.030 / 0.040
G29     306.3          27.6               11.8 +/-    1.52      21.7 +/-    1.52  0.030 / 0.040