PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-20:58:10
G02     21.4           64.2               10.4 +/-    0.58      11.4 +/-    0.58  0.040 / 0.050
G05     151.5          53.4               13.7 +/-    0.54      16.7 +/-    0.54  0.040 / 0.050
G06     49.3           21.8                8.3 +/-    1.92      17.4 +/-    1.92  0.060 / 0.050
G12     208.8          76.1               10.7 +/-    0.39      11.0 +/-    0.39  0.070 / 0.060
G19     91.1           17.9                9.9 +/-    1.35      22.9 +/-    1.35  0.110 / 0.120
G25     308.1          46.5               10.3 +/-    1.41      13.6 +/-    1.41  0.110 / 0.140
G29     299.9          20.0                9.9 +/-    0.96      21.7 +/-    0.96  0.030 / 0.020