PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-22:57:50
G10     292.7          49.7               12.8 +/-    0.60      16.2 +/-    0.60  0.070 / 0.130
G14     209.4          10.9                6.2 +/-   44.56      16.8 +/-   44.56  0.060 / 0.150
G15     46.7           31.1               12.1 +/-    0.80      20.7 +/-    0.80  0.060 / 0.120
G18     351.6          66.5               13.0 +/-    0.50      14.0 +/-    0.50  0.070 / 0.110
G20     69.7           19.3               13.9 +/-    1.53      31.0 +/-    1.53  0.050 / 0.050
G21     90.0           74.5               16.1 +/-    0.67      16.6 +/-    0.67  0.050 / 0.050
G24     101.9          25.4               16.0 +/-    0.54      30.9 +/-    0.54  0.070 / 0.090
G27     301.6          34.0               15.2 +/-    0.68      24.6 +/-    0.68  0.050 / 0.080
G32     210.3          26.9               18.0 +/-    0.98      33.8 +/-    0.98  0.200 / 0.910