PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-00:12:50
G10     279.1          43.9               13.6 +/-    0.78      18.6 +/-    0.78  0.100 / 0.280
G13     38.6           11.2               12.2 +/-    3.49      33.1 +/-    3.49  0.130 / 0.310
G15     51.1           41.2               14.5 +/-    1.32      20.7 +/-    1.32  0.080 / 0.230
G18     324.5          66.5               13.0 +/-    0.88      14.0 +/-    0.88  0.060 / 0.210
G20     62.6           25.9               12.1 +/-    1.85      23.1 +/-    1.85  0.040 / 0.040
G21     42.3           76.9               14.8 +/-    0.59      15.2 +/-    0.59  0.040 / 0.050
G24     112.1          20.1               15.7 +/-    0.96      34.4 +/-    0.96  0.060 / 0.120
G27     311.0          28.1               14.4 +/-    1.45      26.2 +/-    1.45  0.080 / 0.110
G29     167.5          17.4               16.2 +/-    1.90      38.0 +/-    1.90  0.130 / 0.540
G32     207.0          17.8               18.1 +/-    2.04      42.0 +/-    2.04  0.130 / 0.580