PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-22:12:30
G02     53.6           38.1               10.7 +/-    1.29      16.1 +/-    1.29  0.030 / 0.020
G05     69.7           65.8               11.7 +/-    0.47      12.7 +/-    0.47  0.030 / 0.030
G12     183.8          37.5               12.4 +/-    0.64      18.9 +/-    0.64  0.220 / 0.430
G13     133.0          10.8                9.6 +/-   26.35      26.2 +/-   26.35  0.250 / 0.350
G21     265.8          12.4               11.9 +/-    4.79      31.5 +/-    4.79  0.210 / 0.350
G25     247.4          55.8               12.0 +/-    1.84      14.1 +/-    1.84  0.170 / 0.530
G29     323.3          47.2               11.4 +/-    0.92      15.0 +/-    0.92  0.040 / 0.050