PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-16:27:40
G10     293.5          51.4                9.0 +/-    1.45      11.1 +/-    1.45  0.080 / 0.100
G15     46.3           28.8                3.6 +/-    0.62       6.4 +/-    0.62  0.060 / 0.090
G20     350.2          65.4                6.6 +/-    1.69       7.1 +/-    1.69  0.050 / 0.050
G21     82.1           75.7                8.9 +/-    1.00       9.2 +/-    1.00  0.060 / 0.050
G24     103.7          25.0                7.8 +/-    1.10      15.2 +/-    1.10  0.040 / 0.040
G27     304.8          32.6                6.9 +/-    1.23      11.5 +/-    1.23  0.040 / 0.050
G29     168.2          12.2                7.2 +/-    2.11      19.0 +/-    2.11  0.070 / 0.240
G32     208.1          29.5               10.4 +/-    2.79      18.5 +/-    2.79  0.120 / 0.210