Table 1: Minimal erythemal dose (MED) for different skin types using the Fitzpatrick scale (20)

Type	Skin colour	MED, J/m²	Description
I	White or very pale	200	Always burns, never tans
II	Pale white with beige tint	250	Always burns, sometimes tans
III	Beige to light brown (olive)	300	Sometimes burns, always tans
IV	Light to moderate brown	450	Rarely burns, always tans
V	Medium to dark brown	600	Rarely burns, tans more than average
VI	Dark brown to black	1000	Never burns