PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-20:43:00
G05     46.9           24.8               16.6 +/-    1.83      32.5 +/-    1.83  0.040 / 0.030
G13     83.6           37.4               21.6 +/-    0.73      32.8 +/-    0.73  0.040 / 0.030
G15     131.0          49.0               26.2 +/-    0.74      33.4 +/-    0.74  0.120 / 0.640
G18     241.5          38.6               26.9 +/-    1.45      40.0 +/-    1.45  0.120 / 0.490
G20     24.1           70.4               22.2 +/-    0.53      23.4 +/-    0.53  0.110 / 0.200
G21     309.6          45.2               22.8 +/-    0.94      30.6 +/-    0.94  0.070 / 0.230
G25     199.1          12.5               30.4 +/-    4.66      80.3 +/-    4.66  0.180 / 0.120
G26     295.4          19.2               20.7 +/-    1.82      46.5 +/-    1.82  0.110 / 0.130
G29     149.2          73.0               24.2 +/-    0.98      25.2 +/-    0.98  0.020 / 0.020