PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-17:43:00
G02     233.4          71.5                7.7 +/-    0.42       8.1 +/-    0.42  0.060 / 0.110
G05     173.0          13.1               10.9 +/-    2.35      28.4 +/-    2.35  0.080 / 0.110
G06     41.6           61.4                6.6 +/-    0.59       7.4 +/-    0.59  0.060 / 0.090
G12     320.8          47.2                7.3 +/-    0.64       9.6 +/-    0.64  0.060 / 0.110
G17     66.1           26.8                6.6 +/-    1.94      12.3 +/-    1.94  0.050 / 0.080
G19     54.4           39.4                7.4 +/-    1.33      10.8 +/-    1.33  0.050 / 0.080
G24     249.5          36.4                9.5 +/-    2.09      14.7 +/-    2.09  0.030 / 0.040