PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-22:57:30
G10     292.7          49.7               12.8 +/-    2.86      16.2 +/-    2.86  0.130 / 0.070
G14     209.4          10.9               -5.1 +/-   22.05     -13.8 +/-   22.05  0.110 / 0.080
G15     46.7           31.1               11.4 +/-    1.05      19.5 +/-    1.05  0.090 / 0.140
G18     351.6          66.5               12.6 +/-    0.49      13.6 +/-    0.49  0.060 / 0.160
G20     69.7           19.3               12.4 +/-    1.71      27.8 +/-    1.71  0.050 / 0.080
G21     90.0           74.5               15.3 +/-    0.35      15.8 +/-    0.35  0.050 / 0.080
G24     101.9          25.4               15.8 +/-    0.95      30.6 +/-    0.95  0.250 / 0.360
G27     301.6          34.0               13.3 +/-    0.94      21.5 +/-    0.94  0.080 / 0.180
G32     210.3          26.9               17.8 +/-    1.26      33.2 +/-    1.26  0.070 / 0.190