PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-09:12:30
G07     317.4          51.8                5.5 +/-    0.72       6.8 +/-    0.72  0.030 / 0.040
G08     117.0          45.5               11.2 +/-    0.55      15.0 +/-    0.55  0.030 / 0.050
G09     236.0          84.3                6.8 +/-    0.22       6.9 +/-    0.22  0.080 / 0.130
G16     42.7           21.1                4.5 +/-    2.67       9.7 +/-    2.67  0.110 / 0.170
G23     149.4          58.5               10.0 +/-    0.61      11.5 +/-    0.61  0.030 / 0.040
G27     69.3           36.0                6.9 +/-    0.85      10.7 +/-    0.85  0.030 / 0.050
G28     227.9          18.6                6.3 +/-    2.09      14.4 +/-    2.09  0.040 / 0.050
G30     290.1          24.7                7.2 +/-    2.16      14.2 +/-    2.16  0.040 / 0.050