PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-16:27:50
G08     298.4          23.2                5.3 +/-    1.57      10.7 +/-    1.57  0.050 / 0.070
G10     353.9          62.4                4.0 +/-    0.78       4.5 +/-    0.78  0.050 / 0.070
G14     224.1          40.9                2.8 +/-    1.75       4.0 +/-    1.75  0.060 / 0.110
G20     55.3           55.7                4.9 +/-    0.46       5.8 +/-    0.46  0.060 / 0.090
G21     142.1          43.5                8.0 +/-    0.99      11.0 +/-    0.99  0.040 / 0.030
G24     59.1           25.6                5.9 +/-    0.68      11.3 +/-    0.68  0.030 / 0.040
G27     265.4          34.5                7.0 +/-    1.15      11.3 +/-    1.15  0.060 / 0.120
G32     233.8          60.6                6.9 +/-    0.44       7.7 +/-    0.44  0.070 / 0.110