PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-15:43:10
G02     29.4           59.0               10.5 +/-    0.35      12.0 +/-    0.35  0.030 / 0.040
G05     151.4          56.8               13.3 +/-    0.78      15.6 +/-    0.78  0.030 / 0.030
G06     51.1           21.0                6.6 +/-    0.96      14.3 +/-    0.96  0.040 / 0.040
G12     209.7          72.7               10.4 +/-    0.72      10.8 +/-    0.72  0.040 / 0.040
G19     97.5           10.9               11.8 +/-    1.14      32.3 +/-    1.14  0.040 / 0.060
G20     198.1          21.8               13.2 +/-    1.96      27.7 +/-    1.96  0.050 / 0.060
G25     301.0          52.4               11.2 +/-    1.69      13.8 +/-    1.69  0.110 / 0.210
G29     306.8          29.3                6.8 +/-    1.20      12.2 +/-    1.20  0.090 / 0.220