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Maximum potential UV-B exposure measured by PS dosimeter badges exposed in the direct sun on a horizontal surface on the same day each week that participants wore personal dosimeter badges. One badge was exposed each day. Each point represents a single badge (n = 31). Study cohort dates: fall, 10/29–12/15; winter, 1/17–3/16; spring, 4/11–6/8; and summer, 7/18–9/14. Study cohorts without a common letter differ, P < 0.05.
