PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-20:13:10
G05     49.2           18.2               12.6 +/-    0.86      29.0 +/-    0.86  0.100 / 0.260
G10     238.1          13.6               17.8 +/-    2.98      45.7 +/-    2.98  0.090 / 0.220
G13     74.0           37.2               16.7 +/-    0.45      25.4 +/-    0.45  0.040 / 0.080
G15     119.8          53.8               20.2 +/-    0.63      24.3 +/-    0.63  0.040 / 0.070
G16     315.0          11.1               14.0 +/-    2.50      38.0 +/-    2.50  0.040 / 0.050
G18     248.4          44.6               17.7 +/-    1.88      23.9 +/-    1.88  0.040 / 0.050
G20     30.3           63.7               16.9 +/-    0.81      18.6 +/-    0.81  0.190 / 0.660
G21     316.9          50.2               16.6 +/-    0.81      20.9 +/-    0.81  0.230 / 0.740
G26     288.6          19.0               15.2 +/-    1.93      34.3 +/-    1.93  0.070 / 0.160
G29     155.2          64.3               19.8 +/-    1.31      21.8 +/-    1.31  0.060 / 0.150