s1_polar_avgDD – Supplemental material for Are headforms a poor surrogate for helmet fit?

Supplemental material, s1_polar_avgDD for Are headforms a poor surrogate for helmet fit? by Kristie Liu, Daniel I Aponte, David J Greencorn, Shawn M Robbins and David J Pearsall in Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology