PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-21:58:10
G10     246.8          22.5               20.9 +/-    2.29      43.3 +/-    2.29  0.040 / 0.060
G13     59.4           33.8               16.7 +/-    0.70      27.1 +/-    0.70  0.040 / 0.060
G15     97.3           57.9               19.2 +/-    0.35      22.2 +/-    0.35  0.120 / 0.330
G16     303.0          14.0               15.1 +/-    2.54      38.3 +/-    2.54  0.110 / 0.320
G18     262.4          52.9               18.4 +/-    0.58      22.4 +/-    0.58  0.190 / 0.470
G20     40.0           51.9               15.8 +/-    0.63      19.5 +/-    0.63  0.220 / 0.410
G21     329.1          57.8               17.3 +/-    0.78      20.1 +/-    0.78  0.040 / 0.140
G26     275.4          16.8               18.0 +/-    1.63      42.8 +/-    1.63  0.050 / 0.120
G29     161.8          51.3               18.4 +/-    0.98      22.8 +/-    0.98  0.040 / 0.060