PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-14:57:30
G05     48.4           18.3                4.8 +/-    1.81      11.0 +/-    1.81  0.130 / 0.160
G10     235.5          10.7              -17.0 +/-    9.77     -46.8 +/-    9.77  0.090 / 0.110
G13     78.8           37.2                5.2 +/-    0.81       7.9 +/-    0.81  0.110 / 0.140
G15     123.6          51.5                6.7 +/-    0.53       8.3 +/-    0.53  0.090 / 0.160
G18     245.0          43.0                7.6 +/-    1.46      10.5 +/-    1.46  0.040 / 0.030
G20     22.1           70.0                5.3 +/-    0.36       5.6 +/-    0.36  0.040 / 0.030
G21     316.4          50.4                5.0 +/-    1.07       6.2 +/-    1.07  0.040 / 0.040
G26     291.4          19.6                5.1 +/-    0.63      11.4 +/-    0.63  0.050 / 0.050
G29     151.8          68.8                6.7 +/-    0.54       7.2 +/-    0.54  0.050 / 0.070