Effects of span reflections and footing assumptions on transmission tower insulator surge voltage — MATLAB code and numerical results

Reproducible numerical supplement accompanying the manuscript "Effects of span reflections and footing assumptions on transmission tower insulator surge voltage" by Md. Zoyheroul Islam and Md. Salah Uddin Yusuf. The manuscript is being prepared for journal submission; this record is the code/data supplement, not a peer-reviewed journal article. Includes MATLAB source, parameters, deterministic case-level results, computational plots and internal numerical checks. The 58 cases are numerical simulations, not experimental measurements. A native MATLAB R2025b Update 2 reproduction on 1 November 2026 matched the supplied case-level outputs and verification tables exactly. See README.md and release_verification.json in the ZIP for reproduction instructions and limitations.