PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-21:57:40
G01     277.4          41.7                8.8 +/-    2.01      12.5 +/-    2.01  0.040 / 0.080
G03     314.8          24.5                7.2 +/-    1.35      14.3 +/-    1.35  0.040 / 0.060
G10     126.7          20.2                9.4 +/-    1.07      20.5 +/-    1.07  0.040 / 0.060
G11     253.4          22.0                9.0 +/-    1.97      18.9 +/-    1.97  0.040 / 0.070
G14     37.9           52.7                7.5 +/-    0.68       9.2 +/-    0.68  0.100 / 0.140
G22     314.5          46.5                5.3 +/-    2.20       7.1 +/-    2.20  0.130 / 0.150
G25     52.7           15.3                7.0 +/-    1.31      17.2 +/-    1.31  0.060 / 0.090
G26     152.1          20.6               10.6 +/-    1.67      23.1 +/-    1.67  0.050 / 0.090
G31     79.2           79.8                7.7 +/-    0.47       7.9 +/-    0.47  0.130 / 0.380
G32     59.7           35.7                5.5 +/-    0.63       8.6 +/-    0.63  0.110 / 0.350