PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/01-21:43:20
G10     287.5          47.7               16.8 +/-    0.96      21.8 +/-    0.96  0.050 / 0.050
G15     47.6           34.0               14.3 +/-    0.53      23.1 +/-    0.53  0.050 / 0.040
G18     343.4          66.9               17.0 +/-    1.33      18.3 +/-    1.33  0.110 / 0.180
G20     66.8           22.3               15.0 +/-    0.71      31.2 +/-    0.71  0.090 / 0.160
G21     77.2           75.7               19.6 +/-    0.83      20.1 +/-    0.83  0.080 / 0.160
G24     105.8          23.6               18.3 +/-    0.86      36.9 +/-    0.86  0.070 / 0.200
G27     305.5          32.1               17.6 +/-    2.07      29.5 +/-    2.07  0.070 / 0.210
G32     209.2          22.6               23.5 +/-    2.33      48.6 +/-    2.33  0.070 / 0.220