File 1. Linear Roughness Parameters.xlsx

This data file contains three worksheets containing raw data and descriptive statistics regarding roughness (amplitude, spatial, and hybrid) parameters obtained in the longitudinal direction of the spider silk fibres using Gwyddion software, and are described in its manual. The column descriptions for the raw data worksheets are as follows: Amplitude Parameters COLUMN A – Sample Label COLUMN B – Roughness Average (Ra) COLUMN C – Root mean square roughness (Rq) COLUMN D – Maximum height of the roughness (Rt) COLUMN E – Maximum roughness valley depth (Rv) COLUMN F – Maximum roughness peak height (Rp) COLUMN G – Average maximum height of the roughness (Rtm) COLUMN H – Average maximum roughness valley depth (Rvm) COLUMN I – Average maximum roughness peak height (Rpm) COLUMN J – Average third highest peak to third lowest valley height (R3z) COLUMN K – Average third highest peak to third lowest valley height (R3z ISO) COLUMN L – Average maximum height of the profile (Rz) COLUMN M – Average maximum height of the roughness (Rz ISO) COLUMN N – Skewness (Rsk) COLUMN O – Kurtosis (Rku) COLUMN P – Waviness average (Wa) COLUMN Q – Root mean square waviness (Wq) COLUMN R – Waviness maximum height (Wy=Wmax) COLUMN S – Maximum height of the profile (Pt) Spatial Parameters COLUMN A – Sample Label COLUMN B – Average wavelength of the profile (lambda a) COLUMN C – Root mean square (RMS) wavelength of the profile (lambda q) Hybrid Parameters COLUMN A – Sample Label COLUMN B – Average absolute slope (delta a) COLUMN C – Root mean square (RMS) slope (delta q) (10^-6) COLUMN D – Length (L) COLUMN E – Developed profile length (L0) COLUMN F – Profile length ratio (Lr)