PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-10:57:10
G02     34.9           54.3                5.4 +/-    1.08       6.5 +/-    1.08  0.030 / 0.030
G05     140.2          61.7                9.6 +/-    0.35      10.7 +/-    0.35  0.030 / 0.030
G06     52.0           21.1                3.3 +/-    2.11       7.0 +/-    2.11  0.310 / 0.350
G12     204.5          69.4                7.9 +/-    0.58       8.4 +/-    0.58  0.180 / 0.280
G20     199.7          23.3                6.9 +/-    3.11      14.0 +/-    3.11  0.020 / 0.020
G25     297.7          53.2                5.0 +/-    2.07       6.1 +/-    2.07  0.020 / 0.030
G29     308.8          30.8                4.6 +/-    1.15       8.0 +/-    1.15  0.240 / 0.190