PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-06:42:30
G03     225.5          62.7                7.8 +/-    1.42       8.7 +/-    1.42  0.040 / 0.050
G07     254.3          14.5                6.7 +/-    3.40      16.9 +/-    3.40  0.040 / 0.040
G09     309.2          27.4                5.5 +/-    1.26      10.2 +/-    1.26  0.040 / 0.060
G16     114.0          64.4               10.6 +/-    0.55      11.6 +/-    0.55  0.040 / 0.050
G22     190.4          47.0                7.0 +/-    0.99       9.1 +/-    0.99  0.080 / 0.360
G23     324.6          54.5                5.6 +/-    0.69       6.8 +/-    0.69  0.080 / 0.270
G26     60.4           49.3                7.9 +/-    0.94      10.1 +/-    0.94  0.080 / 0.170
G31     56.1           15.0                4.6 +/-    1.98      11.5 +/-    1.98  0.070 / 0.220