PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-20:13:10
G02     25.4           61.6               11.9 +/-    0.98      13.3 +/-    0.98  0.030 / 0.030
G05     153.0          56.2               15.0 +/-    0.67      17.7 +/-    0.67  0.030 / 0.030
G06     51.8           19.0                9.6 +/-    1.29      21.7 +/-    1.29  0.040 / 0.060
G12     204.0          71.6               12.7 +/-    0.92      13.3 +/-    0.92  0.030 / 0.060
G19     97.7           10.7               11.5 +/-    1.61      31.6 +/-    1.61  0.060 / 0.130
G20     197.4          23.2               17.7 +/-    1.50      36.1 +/-    1.50  0.050 / 0.120
G25     298.2          55.1               14.1 +/-    1.18      16.8 +/-    1.18  0.030 / 0.050
G29     305.3          26.6               12.5 +/-    1.68      23.5 +/-    1.68  0.030 / 0.040