2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/111274The designs of many neutrino experiments rely on calculations of the background rates arising from cosmic-ray muons at shallow depths. Understanding the angular dependence of low momentum cosmic-ray muons at the surface is necessary for these calculations. Heuristically, from examination of the data, a simple parameterization is proposed, based on a straighforward scaling variable. This in turn, allows a universal calculation of the differential muon intensity at the surface for all zenith angles and essentially all momenta.v2: 9 pages, 4 figures, re-write of introduction for clarity and improved discussion of fits. Also, implementation of Tang fit is corrected for error in original paper after discussion with author. v1: 7 pages, 4 figuresHigh Energy Physics - Phenomenologytext