PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-10:27:50
G01     128.8          10.1              -11.8 +/-   28.96     -32.7 +/-   28.96  0.160 / 0.270
G07     50.9           68.6                6.9 +/-    1.08       7.4 +/-    1.08  0.260 / 0.290
G08     51.6           39.8                4.6 +/-    1.37       6.7 +/-    1.37  0.030 / 0.030
G09     176.5          36.8                6.5 +/-    0.83      10.0 +/-    0.83  0.020 / 0.030
G11     118.7          32.8                6.1 +/-    0.66      10.1 +/-    0.66  0.030 / 0.030
G17     198.9          14.6                5.7 +/-    3.79      14.3 +/-    3.79  0.030 / 0.030
G23     161.2          11.7                4.2 +/-    1.88      11.4 +/-    1.88  0.160 / 0.270
G28     272.9          51.7                6.5 +/-    2.87       8.0 +/-    2.87  0.120 / 0.240
G30     328.5          56.9                5.1 +/-    0.52       6.0 +/-    0.52  0.040 / 0.050