PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-16:28:10
G08     296.1          23.5                3.8 +/-    0.98       7.6 +/-    0.98  0.040 / 0.070
G10     358.9          62.6                6.0 +/-    0.70       6.7 +/-    0.70  0.040 / 0.060
G14     225.8          43.0                6.8 +/-    1.66       9.5 +/-    1.66  0.030 / 0.030
G20     58.9           54.5                6.5 +/-    0.96       7.8 +/-    0.96  0.030 / 0.030
G21     143.5          41.2                7.2 +/-    1.07      10.3 +/-    1.07  0.080 / 0.090
G24     57.0           24.7                8.0 +/-    0.95      15.7 +/-    0.95  0.080 / 0.090
G27     262.7          33.7                7.1 +/-    1.99      11.6 +/-    1.99  0.140 / 0.120
G32     237.0          62.7                7.2 +/-    1.55       8.0 +/-    1.55  0.110 / 0.140