PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-04:58:10
G03     249.3          68.3                7.9 +/-    0.42       8.4 +/-    0.42  0.050 / 0.070
G09     303.3          19.0                5.2 +/-    1.90      11.7 +/-    1.90  0.040 / 0.060
G14     99.3           13.9                5.4 +/-    1.80      13.7 +/-    1.80  0.040 / 0.040
G16     136.2          57.3                8.9 +/-    0.77      10.4 +/-    0.77  0.030 / 0.040
G22     197.0          57.8                8.1 +/-    0.35       9.4 +/-    0.35  0.040 / 0.040
G23     316.9          46.4                6.6 +/-    0.86       8.7 +/-    0.86  0.030 / 0.080
G26     76.6           55.0                6.0 +/-    1.16       7.1 +/-    1.16  0.140 / 0.150
G31     50.5           23.3                3.8 +/-    2.26       7.8 +/-    2.26  0.140 / 0.220