PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/01-20:28:30
G10     251.4          26.5               21.5 +/-    1.26      40.5 +/-    1.26  0.050 / 0.040
G13     53.8           30.8               16.1 +/-    0.65      27.7 +/-    0.65  0.040 / 0.050
G15     84.4           57.1               17.5 +/-    0.58      20.4 +/-    0.58  0.090 / 0.310
G16     298.8          13.8               16.7 +/-    1.87      42.9 +/-    1.87  0.110 / 0.280
G18     271.0          56.9               19.3 +/-    0.94      22.6 +/-    0.94  0.150 / 0.330
G20     43.3           47.8               17.1 +/-    0.68      22.1 +/-    0.68  0.140 / 0.270
G21     337.5          62.2               19.0 +/-    0.66      21.1 +/-    0.66  0.040 / 0.070
G26     271.2          14.8               20.2 +/-    2.42      50.5 +/-    2.42  0.040 / 0.060
G29     162.9          44.0               20.8 +/-    1.16      28.4 +/-    1.16  0.060 / 0.150