PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-18:12:30
G08     292.1          22.8                8.1 +/-    1.21      16.6 +/-    1.21  0.090 / 0.130
G10     8.9            63.2                6.7 +/-    0.53       7.4 +/-    0.53  0.090 / 0.110
G14     231.4          47.8               10.7 +/-    1.30      13.9 +/-    1.30  0.040 / 0.100
G18     67.0           49.0                7.5 +/-    0.40       9.5 +/-    0.40  0.050 / 0.110
G21     145.9          33.2               10.6 +/-    0.48      17.4 +/-    0.48  0.060 / 0.110
G24     55.8           25.8                7.3 +/-    0.58      14.1 +/-    0.58  0.050 / 0.110
G27     251.4          30.7               10.4 +/-    1.10      18.0 +/-    1.10  0.040 / 0.030
G32     248.5          67.9                7.5 +/-    0.40       8.1 +/-    0.40  0.040 / 0.030