PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-14:57:40
G02     29.4           59.0                9.1 +/-    0.39      10.4 +/-    0.39  0.030 / 0.030
G05     150.9          56.6               11.1 +/-    1.02      13.0 +/-    1.02  0.030 / 0.030
G06     50.7           21.8                7.5 +/-    0.66      15.9 +/-    0.66  0.040 / 0.040
G12     211.4          73.2                8.6 +/-    0.62       8.9 +/-    0.62  0.030 / 0.040
G19     97.1           11.3               10.4 +/-    1.06      28.3 +/-    1.06  0.110 / 0.240
G20     198.3          21.1               10.1 +/-    2.29      21.7 +/-    2.29  0.100 / 0.200
G25     301.9          51.8                9.8 +/-    0.58      12.2 +/-    0.58  0.040 / 0.060
G29     306.8          29.5                9.7 +/-    0.96      17.1 +/-    0.96  0.040 / 0.060