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Skin cancer rate and TVitDduring the four seasons of the year between 2007 and 2011 in Arica, Chile.
| TVitD, min | |||||
|---|---|---|---|---|---|
| Year | Skin cancer rate/100,000 individuals | Winter | Fall | Spring | Summer |
| 2007 | 30.2 | 19.1 | 11.0 | 10.1 | 8.5 |
| 2008 | 25.4 | 18.5 | 9.9 | 9.3 | 8.1 |
| 2009 | 30.8 | 19.9 | 10.2 | 10.3 | 8.6 |
| 2010 | 24.3 | 22.5 | 11.9 | 11.5 | 9.1 |
| 2011 | 23.8 | 23.8 | 12.6 | 12.7 | 9.9 |
TVitD, ultraviolet radiation exposure time required to synthesize 1,000 IU of vitamin D.
