PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-21:58:00
G05     52.2           12.9               15.3 +/-    0.82      40.1 +/-    0.82  0.050 / 0.070
G10     243.7          19.6               27.7 +/-    1.86      61.6 +/-    1.86  0.040 / 0.070
G13     64.0           35.4               19.3 +/-    0.81      30.4 +/-    0.81  0.110 / 0.280
G15     106.0          57.2               22.9 +/-    0.58      26.7 +/-    0.58  0.090 / 0.260
G16     306.9          13.6               17.4 +/-    0.86      44.9 +/-    0.86  0.080 / 0.350
G18     257.1          50.0               23.9 +/-    1.17      30.2 +/-    1.17  0.080 / 0.370
G20     37.1           55.6               18.7 +/-    0.55      22.2 +/-    0.55  0.030 / 0.060
G21     324.4          55.0               21.0 +/-    1.37      25.1 +/-    1.37  0.030 / 0.050
G26     279.4          18.0               20.3 +/-    1.38      46.9 +/-    1.38  0.070 / 0.170
G29     160.3          56.1               24.2 +/-    0.41      28.6 +/-    0.41  0.100 / 0.170