PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-13:57:30
G02     9.4            72.0                7.3 +/-    0.56       7.6 +/-    0.56  0.030 / 0.060
G05     162.5          40.6                9.8 +/-    1.35      14.1 +/-    1.35  0.040 / 0.060
G06     43.6           35.3                4.9 +/-    0.69       7.8 +/-    0.69  0.030 / 0.030
G12     288.9          77.2                5.9 +/-    1.12       6.1 +/-    1.12  0.020 / 0.030
G19     83.8           20.8                7.5 +/-    0.92      16.1 +/-    0.92  0.120 / 0.300
G24     223.5          17.2                7.6 +/-    2.19      17.9 +/-    2.19  0.140 / 0.270
G25     314.6          38.2                5.8 +/-    1.13       8.7 +/-    1.13  0.050 / 0.090
G29     295.1          19.0                6.0 +/-    1.19      13.5 +/-    1.19  0.050 / 0.100