PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-08:13:00
G03     237.7          66.4               -6.5 +/-   15.81      -7.1 +/-   15.81  0.070 / 0.140
G07     250.4          11.5               -2.0 +/-   15.78      -5.3 +/-   15.78  0.100 / 0.110
G09     306.2          23.2                5.3 +/-    1.47      10.9 +/-    1.47  0.050 / 0.050
G14     102.9          10.8                1.9 +/-    3.96       5.2 +/-    3.96  0.040 / 0.050
G16     124.1          61.3               17.7 +/-   15.11      19.9 +/-   15.11  0.100 / 0.260
G22     192.2          52.3                5.6 +/-    1.07       6.8 +/-    1.07  0.090 / 0.210
G23     320.4          50.1               12.2 +/-   11.79      15.4 +/-   11.79  0.040 / 0.050
G26     66.7           51.7              -46.9 +/-   72.12     -58.0 +/-   72.12  0.040 / 0.050
G31     53.4           18.0                8.8 +/-   19.64      20.3 +/-   19.64  0.160 / 0.320