PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-21:12:30
G02     25.1           61.6               12.3 +/-    0.99      13.8 +/-    0.99  0.040 / 0.060
G05     150.7          57.4               15.5 +/-    0.58      18.1 +/-    0.58  0.050 / 0.060
G06     52.3           18.1                9.2 +/-    0.65      21.2 +/-    0.65  0.030 / 0.050
G12     201.1          70.5               15.2 +/-    0.67      16.0 +/-    0.67  0.040 / 0.040
G19     98.3           10.2               10.9 +/-    2.38      30.2 +/-    2.38  0.060 / 0.120
G20     197.3          24.1               19.6 +/-    1.73      39.1 +/-    1.73  0.040 / 0.130
G25     297.3          55.4               14.5 +/-    0.62      17.2 +/-    0.62  0.030 / 0.030
G29     305.6          26.7               12.5 +/-    1.35      23.5 +/-    1.35  0.030 / 0.030