PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-12:42:40
G01     128.7          10.1              -20.2 +/-   16.79     -56.1 +/-   16.79  0.030 / 0.050
G07     53.1           68.2                3.9 +/-    0.68       4.1 +/-    0.68  0.040 / 0.050
G08     51.5           39.7              -14.5 +/-    7.20     -21.2 +/-    7.20  0.030 / 0.040
G09     176.5          36.8              -11.4 +/-    7.35     -17.5 +/-    7.35  0.030 / 0.030
G11     117.9          32.7               19.8 +/-    6.72      32.7 +/-    6.72  0.190 / 0.320
G17     198.9          14.7                2.5 +/-    3.85       6.2 +/-    3.85  0.110 / 0.290
G23     161.1          11.4               18.9 +/-   10.80      51.0 +/-   10.80  0.190 / 0.440
G28     272.8          51.5              -82.5 +/-   28.85    -102.1 +/-   28.85  0.120 / 0.250
G30     327.8          56.4                3.2 +/-    0.62       3.7 +/-    0.62  0.160 / 0.300