Not clustered: 7. Gordon Bishop — only 10 of 19 metrics available (needs ≥ 60%); 8. Mark Tyminski — only 10 of 19 metrics available (needs ≥ 60%); 11. James Atkinson — only 7 of 19 metrics available (needs ≥ 60%); 11. Jakota Cummings — only 5 of 19 metrics available (needs ≥ 60%); 11. Hayden Emms — only 5 of 19 metrics available (needs ≥ 60%); 11. Jason Lannstrom — only 9 of 19 metrics available (needs ≥ 60%); 11. Mark Wallace — only 8 of 19 metrics available (needs ≥ 60%).
GlideComp groups the pilots by flying style, and not by score. It transforms the rank of every behavioural metric to a percentile inside the field. It then compares two pilots by the mean percentile gap over the metrics that both pilots have, and never fills in a missing value. Ward-linkage agglomeration forms the groups, and the best mean silhouette selects the number of groups. Each group carries the spread of the GAP ranks of its members, which shows where a style paid and where it did not.
k was searched from 2 to 3. The mean silhouette is 0.14 — a value near 0 means soft group boundaries, and a value near 1 means tight, well-separated groups.