Filament 9 is a confirmed bone candidate, receiving a quality grade of “B.” It strongly satisfies our criterion 3 (lying exactly on the physical Galactic midplane) and moderately satisfies criterion 2 (lying at a slight \(15^\circ\) angle with respect to the plane). Filament 9 is notable for lying perpendicular to the \citet{Dame_2011} Scutum-Centaurus fit in p-v space, suggesting it could be a potential interarm filament.