![](../../images/mobile/mobile ex_en.png)
![Japanese site](../../images/lang/japanese.png)
![Explanation Explanation of Information on Vitamin D Synthesis / Erythemal UV](../../images/mobile/explanation.png)
Recommending Sun Exposure Time for Vitamin D Synthesis (Average of Past Data)
Monitoring Station | |
Time of the Year | |
Time of the Day | Around Noon |
Recommend exposure time of | for 10 μg vitamin D synthesis. |
Avoid exposure more than | not to be sunburnt. |