Incidence rates (IR) of CMM per 1,00,000 (A), uveal melanoma per 10,00,000 (B) and the ratio (C) as functions of latitude. Melanoma data were extracted from the work of Virgili et al.38 Data refer to the period 1983–1994 and are from Ragusa (37°C), Tarragona (41°C), Navarra (43°C), Parma (45°C), Geneva (46°C), Slovenia (46°C), Bas Rhin (48°C), Saarland (49°C), CalvadosGen (49°C), Slovakia (49°C), Cracow (50°C), Eindhoven (51°C), West Midlands (53°C), Mersey (53°C), Yorkshire (54°C), Scotland (56°C), Denmark (56°C), Estonia (59°C), Sweden (62°C), Norway (62°C), Finland (64°C) and Iceland (65°C).