PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-23:57:40
G08     304.6          21.2               15.6 +/-    1.45      33.2 +/-    1.45  0.030 / 0.030
G10     338.0          60.8               12.2 +/-    0.49      13.7 +/-    0.49  0.030 / 0.030
G14     220.5          36.2               16.8 +/-    1.61      26.0 +/-    1.61  0.070 / 0.070
G18     44.7           57.8               14.2 +/-    0.72      16.4 +/-    0.72  0.060 / 0.080
G21     137.5          51.8               16.9 +/-    0.49      20.9 +/-    0.49  0.070 / 0.080
G24     70.9           30.3               15.5 +/-    1.07      26.9 +/-    1.07  0.050 / 0.080
G27     267.6          36.7               15.4 +/-    2.45      23.7 +/-    2.45  0.050 / 0.130
G32     227.2          53.4               14.7 +/-    2.62      17.9 +/-    2.62  0.060 / 0.120