Density of normal vectors to the orbital planes (in stars deg ⁻²) of all 116 stars in the sample. The direction of the normal vector is described by the inclination ( i; horizontal lines spaced 30° apart) and the angle to the ascending node (Ω; longitudinal lines spaced 45° apart, with the line marked E representing Ω = 0°). An overdensity of 0.024 stars deg ⁻² occurs at ( i, Ω) = (130°, 96°).