PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-16:57:40
G08     292.0          23.9                7.1 +/-    1.35      14.2 +/-    1.35  0.050 / 0.110
G10     7.4            62.9                4.9 +/-    0.47       5.4 +/-    0.47  0.050 / 0.100
G14     229.1          46.5                8.6 +/-    0.83      11.4 +/-    0.83  0.100 / 0.110
G18     317.5          12.1                6.8 +/-    2.34      18.1 +/-    2.34  0.110 / 0.140
G20     64.6           52.5                6.2 +/-    1.06       7.6 +/-    1.06  0.080 / 0.080
G21     145.6          37.6                8.2 +/-    1.10      12.3 +/-    1.10  0.050 / 0.070
G24     53.4           22.9                6.2 +/-    0.77      12.6 +/-    0.77  0.040 / 0.040
G27     258.1          32.1                7.1 +/-    1.74      11.9 +/-    1.74  0.050 / 0.040
G32     243.5          66.2                7.3 +/-    0.99       7.9 +/-    0.99  0.050 / 0.100