PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-18:28:00
G02     233.0          70.5               13.4 +/-    0.44      14.2 +/-    0.44  0.040 / 0.030
G05     175.6          11.6               10.5 +/-   21.40      28.4 +/-   21.40  0.040 / 0.040
G06     41.7           60.6                6.8 +/-   14.96       7.7 +/-   14.96  0.080 / 0.090
G12     321.9          50.7               10.8 +/-    0.91      13.5 +/-    0.91  0.070 / 0.120
G19     56.9           38.3                1.9 +/-   37.18       2.9 +/-   37.18  0.030 / 0.050
G24     249.8          36.4               11.9 +/-    1.94      18.4 +/-    1.94  0.030 / 0.040
G25     316.6          14.9               11.3 +/-    2.44      28.2 +/-    2.44  0.160 / 0.300