PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-21:27:40
G02     61.6           32.1               10.1 +/-    1.26      17.0 +/-    1.26  0.040 / 0.080
G05     56.2           62.0               10.7 +/-    0.50      11.9 +/-    0.50  0.050 / 0.070
G12     183.9          27.5               12.6 +/-    1.79      23.3 +/-    1.79  0.060 / 0.120
G13     126.6          17.9               12.4 +/-    1.67      28.8 +/-    1.67  0.050 / 0.120
G15     162.9          14.3               13.2 +/-    2.35      33.4 +/-    2.35  0.030 / 0.040
G20     209.3          66.0               13.4 +/-    0.97      14.6 +/-    0.97  0.020 / 0.040
G25     224.0          47.3               11.8 +/-    0.94      15.4 +/-    0.94  0.040 / 0.050
G29     333.0          60.8               11.6 +/-    1.10      13.1 +/-    1.10  0.020 / 0.050