PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-23:57:30
G08     289.7          23.5               13.7 +/-    1.26      27.7 +/-    1.26  0.060 / 0.090
G10     9.7            63.2               11.0 +/-    0.40      12.1 +/-    0.40  0.050 / 0.110
G14     232.3          49.8               15.0 +/-    0.89      18.9 +/-    0.89  0.040 / 0.120
G18     65.9           50.2               13.0 +/-    1.22      16.4 +/-    1.22  0.040 / 0.110
G21     146.8          36.7               13.6 +/-    0.75      20.9 +/-    0.75  0.040 / 0.030
G24     55.5           25.8               11.0 +/-    0.61      21.1 +/-    0.61  0.030 / 0.030
G27     250.5          30.3               15.2 +/-    1.53      26.4 +/-    1.53  0.110 / 0.140
G32     247.8          66.2               11.7 +/-    0.88      12.7 +/-    0.88  0.100 / 0.120