Exposure Time for Vitamin D Synthesis / MED (real time data)
| Monitoring Station |
Tsukuba |
| Date |
// |
| Time |
: Average for 30 min |
| Exposure time for the synthesis of 10µg Vitamin D (600cm2) |
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| Exposure time for the synthesis 10µg Vitamin D (1200cm2) |
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| Exposure time for Erythemal UV; MED |
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Variation of the times for Vitamin D Synthesis / MED
- Red Line : Time to reach MED (Minimal Erythema Dose). Repeated exposure over this value is harmful to your health.
- Blue Line : Time required for the production of 10 µg vitamin D when an effective area of 600 cm2 is exposed (corresponding to the face and the back of both hands).
- Green Line : Time required for the production of 10 µg vitamin D when an effective area of 1200 cm2 is exposed (additional parts of arms or legs).
- The times can be reduced by increasing the area exposed to solar radiation by active sunbath.
- Note : Since logarithmic scale is adopted, each interval means 10 min. In addition, the gray area shows the production of 10 µg vitamin D and MED with an exposure over 60 min.
Position of Tsukuba
