PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-19:12:40
G05     47.6           22.0               15.7 +/-    0.84      33.0 +/-    0.84  0.050 / 0.090
G13     80.9           37.4               18.4 +/-    1.04      27.9 +/-    1.04  0.050 / 0.070
G15     127.4          50.5               20.5 +/-    0.55      25.7 +/-    0.55  0.120 / 0.390
G18     243.3          40.7               20.0 +/-    1.37      28.8 +/-    1.37  0.200 / 0.260
G20     24.8           69.2               19.2 +/-    0.63      20.4 +/-    0.63  0.090 / 0.190
G21     312.1          47.1               18.2 +/-    1.83      23.8 +/-    1.83  0.090 / 0.250
G25     198.9          11.5               19.1 +/-    3.07      51.7 +/-    3.07  0.050 / 0.100
G26     294.6          18.9               17.8 +/-    1.73      40.2 +/-    1.73  0.040 / 0.100
G29     150.4          69.7               20.5 +/-    1.35      21.7 +/-    1.35  0.040 / 0.040