Movie S2. Individual azimuthal orientation measurements localized along fibril backbones

(top) TAB SMOLM image of fibrils, color-coded according to the mean azimuthal angle (φ) and standard deviation of the orientations (σ_φ) measured within each bin. Scale bar: 1 µm. Inset: SMLM image of the corresponding Aβ42 fibrils. Color bar: localizations per bin (20 × 20 nm^2). Scale bar: 1 µm. (bottom) All individual orientation measurements localized along the fibril backbones within the white boxes. The lines depict the direction of the estimated φ angle and are color-coded accordingly. Scale bar: 100 nm.