PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-17:12:30
G08     304.6          20.7                8.7 +/-    1.97      18.9 +/-    1.97  0.060 / 0.080
G10     342.3          61.4                9.7 +/-    0.41      10.9 +/-    0.41  0.070 / 0.070
G14     221.7          36.3               13.0 +/-    1.37      20.2 +/-    1.37  0.050 / 0.070
G18     50.7           55.4               11.7 +/-    1.10      13.9 +/-    1.10  0.070 / 0.070
G21     138.9          46.1               14.5 +/-    1.08      19.2 +/-    1.08  0.110 / 0.120
G24     68.4           29.8               13.6 +/-    0.91      23.8 +/-    0.91  0.090 / 0.130
G27     265.7          36.1               11.9 +/-    1.38      18.5 +/-    1.38  0.080 / 0.050
G32     229.4          57.3               12.8 +/-    2.08      14.9 +/-    2.08  0.060 / 0.040