PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-00:12:30
G08     288.3          23.5               12.7 +/-    1.50      25.6 +/-    1.50  0.040 / 0.130
G10     12.5           63.3               11.7 +/-    0.39      13.0 +/-    0.39  0.040 / 0.100
G14     233.6          50.9               13.8 +/-    1.75      17.2 +/-    1.75  0.050 / 0.130
G18     67.4           49.6               12.5 +/-    1.84      15.9 +/-    1.84  0.070 / 0.090
G21     147.4          35.6               12.6 +/-    0.77      19.8 +/-    0.77  0.040 / 0.030
G24     54.4           25.2               10.9 +/-    1.12      21.3 +/-    1.12  0.050 / 0.040
G27     249.2          29.6               13.1 +/-    1.56      23.2 +/-    1.56  0.100 / 0.110
G32     250.4          67.3               13.2 +/-    0.39      14.2 +/-    0.39  0.100 / 0.110