So, the folks with the really cool vitamin D calculator have refined it a bit more and made the new version available....
http://nadir.nilu.no/~olaeng/fastrt/...MEDandMED.html
It has tons of inputs:
latitude/longitude
month/day
time of day
% skin uncovered
skin type (light to dark 1 -> 6)
# of IU of vitamin D desired
even type of surface (pull-down at the bottom, sand, lawn, concrete, etc)
The outputs are # of minutes to achieve that much vitamin D, AND the amount of time to get a sunburn under those conditions.
Sounds really cool, except it's not working for my kids, the sunburn part. I've never seen my kids burn here in Houston, even midday, mid-summer, out for hours. DH is Mexican-American, a middle brown among Mexican Americans, and I'm white. So the kids are browner than average, but not all that dark in the scheme of human skin tones. I tried skin tones 4 and 5, and both say that my kids would burn in less than an hour outside.
I guess I don't expect a solution, it's a computer program that apparently doesn't perfectly model my kids. But since in general, the amount of vitD it outputs seems reasonable, I wanted to share the new version of the calculator, even if the sunburn part doesn't quite work for us.
http://nadir.nilu.no/~olaeng/fastrt/...MEDandMED.html
It has tons of inputs:
latitude/longitude
month/day
time of day
% skin uncovered
skin type (light to dark 1 -> 6)
# of IU of vitamin D desired
even type of surface (pull-down at the bottom, sand, lawn, concrete, etc)
The outputs are # of minutes to achieve that much vitamin D, AND the amount of time to get a sunburn under those conditions.
Sounds really cool, except it's not working for my kids, the sunburn part. I've never seen my kids burn here in Houston, even midday, mid-summer, out for hours. DH is Mexican-American, a middle brown among Mexican Americans, and I'm white. So the kids are browner than average, but not all that dark in the scheme of human skin tones. I tried skin tones 4 and 5, and both say that my kids would burn in less than an hour outside.
I guess I don't expect a solution, it's a computer program that apparently doesn't perfectly model my kids. But since in general, the amount of vitD it outputs seems reasonable, I wanted to share the new version of the calculator, even if the sunburn part doesn't quite work for us.
