Results of varying alignment direction, defined by the angle in the RT plane, ϕ_A, and TN plane, θ_A. The radial direction is the centre of the black cross hairs, with the Parker spiral and background flow direction also shown. The background flow direction is taken as the deHoffman–Teller frame (see Horbury et al. 2020), rather than the average velocity per stream which is influenced by the switchbacks. Higher scores correspond to an alignment direction most consistent with long, thin structures. This is always offset in -T direction, roughly consistent with Parker spiral direction calculated using a twelve hour mode of velocity.