PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-16:13:10
G10     296.3          51.1                7.7 +/-    2.38       9.6 +/-    2.38  0.090 / 0.070
G14     210.3          11.5               -3.6 +/-   19.21      -9.7 +/-   19.21  0.110 / 0.060
G15     45.9           27.1                7.7 +/-    1.32      14.3 +/-    1.32  0.080 / 0.200
G18     2.8            65.7                8.7 +/-    0.44       9.5 +/-    0.44  0.090 / 0.220
G20     70.1           20.9                8.5 +/-    1.53      18.4 +/-    1.53  0.060 / 0.110
G21     103.6          69.6               10.2 +/-    0.74      10.8 +/-    0.74  0.100 / 0.120
G24     99.1           26.4               11.8 +/-    0.83      22.4 +/-    0.83  0.340 / 0.380
G27     299.5          34.9                7.5 +/-    1.67      11.9 +/-    1.67  0.130 / 0.380
G32     210.8          31.1                9.7 +/-    1.55      16.5 +/-    1.55  0.140 / 0.140