PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-22:27:50
G08     319.2          12.5               17.5 +/-    2.74      46.2 +/-    2.74  0.040 / 0.030
G10     305.4          53.9               21.4 +/-    0.91      25.7 +/-    0.91  0.040 / 0.030
G14     211.9          18.7               30.6 +/-    3.96      69.3 +/-    3.96  0.090 / 0.150
G15     45.5           23.2               20.3 +/-    2.60      41.5 +/-    2.60  0.110 / 0.140
G18     11.7           64.6               21.5 +/-    1.35      23.5 +/-    1.35  0.030 / 0.030
G20     75.7           14.1               18.8 +/-    1.59      47.9 +/-    1.59  0.040 / 0.030
G21     113.8          68.2               23.8 +/-    0.99      25.4 +/-    0.99  0.190 / 0.410
G24     92.5           28.6               22.5 +/-    1.94      40.6 +/-    1.94  0.160 / 0.290
G27     291.8          37.1               22.5 +/-    3.45      34.4 +/-    3.45  0.080 / 0.090
G32     214.2          34.8               27.0 +/-    1.66      43.0 +/-    1.66  0.050 / 0.070