PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-16:28:00
G08     319.2          12.2                6.2 +/-    2.07      16.4 +/-    2.07  0.050 / 0.080
G10     308.7          54.9                5.2 +/-    1.81       6.2 +/-    1.81  0.050 / 0.060
G14     212.7          19.0                8.7 +/-    3.73      19.7 +/-    3.73  0.090 / 0.100
G15     45.4           19.9                6.0 +/-    2.26      13.3 +/-    2.26  0.110 / 0.110
G18     19.8           63.3                6.2 +/-    1.02       6.8 +/-    1.02  0.110 / 0.250
G20     76.0           15.7                5.6 +/-    1.89      13.6 +/-    1.89  0.140 / 0.320
G21     119.4          63.3                7.1 +/-    0.73       7.8 +/-    0.73  0.090 / 0.080
G24     90.0           29.1                8.5 +/-    1.80      15.1 +/-    1.80  0.050 / 0.080
G27     289.8          37.4                4.5 +/-    2.51       6.9 +/-    2.51  0.290 / 0.440
G32     214.7          39.2                9.1 +/-    1.33      13.5 +/-    1.33  0.390 / 0.520