(Data for Figure from [2]) Differences in the amount of UVA and UVB at the surface in two locations Jungfraujoch, Switzerland (3576 m above sea-level11732.28) and Innsbruck, Austria (577 m1893.04 a.s.l.) The graph shows clearly the effects of season on both types of ultraviolet radiation, but also the effect of approximately 10,000 feet in altitude.)