PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-17:57:40
G08     280.1          21.7                9.1 +/-    2.18      19.3 +/-    2.18  0.140 / 0.150
G10     35.3           62.4                8.9 +/-    0.82       9.9 +/-    0.82  0.060 / 0.120
G14     245.0          57.5               11.9 +/-    1.56      13.8 +/-    1.56  0.170 / 0.260
G18     80.7           42.2                9.7 +/-    1.25      13.6 +/-    1.25  0.160 / 0.220
G21     150.4          22.5               12.6 +/-    1.63      26.0 +/-    1.63  0.090 / 0.120
G24     46.5           19.4                7.1 +/-    2.06      15.9 +/-    2.06  0.210 / 0.100
G27     240.4          23.6               12.0 +/-    1.94      24.2 +/-    1.94  0.040 / 0.050
G31     181.7          17.3                9.6 +/-    1.40      22.5 +/-    1.40  0.040 / 0.050
G32     285.3          75.2               10.8 +/-    0.45      11.1 +/-    0.45  0.020 / 0.020