PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-21:42:40
G08     288.2          23.2               12.6 +/-    1.07      25.6 +/-    1.07  0.090 / 0.110
G10     14.1           63.2               11.3 +/-    0.60      12.5 +/-    0.60  0.090 / 0.110
G14     234.1          51.0               17.2 +/-    1.92      21.5 +/-    1.92  0.060 / 0.110
G18     69.0           48.5               11.9 +/-    0.55      15.3 +/-    0.55  0.070 / 0.100
G21     147.4          33.4               14.7 +/-    0.88      23.9 +/-    0.88  0.050 / 0.130
G24     53.8           24.8               10.7 +/-    0.36      20.9 +/-    0.36  0.050 / 0.110
G27     248.7          29.3               14.7 +/-    1.44      26.1 +/-    1.44  0.040 / 0.040
G32     252.1          68.1               14.0 +/-    0.82      15.0 +/-    0.82  0.030 / 0.040