DAVIS Vantage Pro2 manual Skin Skin Color History of Tanning & Sunburning Type

Weather Data Measured & Calculated

Table A1: EPA Skin Phototypes

Skin Phototype	Skin color	Tanning & Sunburn history
4 - Always tans;	Brown, dark brown, or	Rarely burns; shows very rapid tanning
rarely burns	black	response

T. B. Fitzpatrick of the Harvard Medical School developed a categorization of skin types 1 through 6 which were adopted by Environment Canada. These skin types are detailed in Table 3b below.

		Table A2: Environment Canada Skin Types and Reaction to the Sun
		Skin	Skin Color	History of Tanning & Sunburning
		Type
		I	White	Always burns easily, never tans
		II	White	Always burns easily, tans minimally
		III	Light Brown	Burns moderately, tans gradually
		IV	Moderate	Burns minimally, tans well
			Brown
		V	Dark Brown	Burns rarely, tans profusely
		VI	Black	Never burns, deep pigmentation
Note:	More about the Fitzpatrick Skin Types is available in: Fitzpatrick TB. Editorial: the
	validity and practicality of sun-reactive skin types I through VI. Arch Dermatol 1988;
	124:869-871

UV Dose and Sunburn - Use this plot to estimate the MED dose leading to sunburn. A person with Type II (Environment Canada) skin type might choose

0.75MED as the maximum for the day; in contrast, a person with Type V (Environment Canada) Skin Type might consider 2.5 MEDs a reasonable dose for the day. NOTE: the Weather Envoy assumes a Fitzpatrick (Environment Canada) Skin Type of II.

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