PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-19:28:00
G02     248.7          75.5               11.4 +/-    0.92      11.7 +/-    0.92  0.080 / 0.160
G05     172.7          17.8               17.9 +/-    1.35      41.5 +/-    1.35  0.100 / 0.220
G06     40.3           53.5               10.1 +/-    0.65      12.2 +/-    0.65  0.160 / 0.270
G12     321.5          58.1               10.6 +/-    0.96      12.2 +/-    0.96  0.080 / 0.260
G17     76.4           17.2               10.2 +/-    1.16      24.0 +/-    1.16  0.030 / 0.050
G19     63.5           34.0               10.1 +/-    0.97      16.3 +/-    0.97  0.040 / 0.090
G24     242.5          32.6               13.0 +/-    1.23      21.6 +/-    1.23  0.080 / 0.110
G25     317.5          20.9                8.4 +/-    2.86      18.0 +/-    2.86  0.100 / 0.120