PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-00:12:30
G03     243.8          68.6                6.3 +/-    0.50       6.7 +/-    0.50  0.040 / 0.040
G09     302.6          17.0                5.4 +/-    2.18      12.8 +/-    2.18  0.050 / 0.040
G14     99.1           14.8                5.5 +/-    1.84      13.9 +/-    1.84  0.030 / 0.050
G16     137.4          57.1                9.5 +/-    0.41      11.1 +/-    0.41  0.030 / 0.050
G22     197.2          57.6                7.5 +/-    0.82       8.7 +/-    0.82  0.140 / 0.170
G23     317.6          47.2                7.0 +/-    1.03       9.1 +/-    1.03  0.150 / 0.210
G26     74.3           54.0                6.0 +/-    0.58       7.2 +/-    0.58  0.160 / 0.240
G31     50.8           22.8                4.3 +/-    2.31       8.9 +/-    2.31  0.260 / 0.180