wrong post ????? great info thoIn a typical scenario, in the mornings, before 10AM the UVI builds up to around 2. You then get a jump in UVI all the way up to 10 or higher from 10AM an on as the sun is in the highest point in the sky. And then, the UVI drops as the sun starts moving towards the horizon. We can get back down to a UVI of 2 around 5 or 6 PM.
The significance of this is that the daily habits of chameleons are usually to come out in the morning, get their core temperature warmed up via basking, and then retreat into the leaves before the sun gets too hot. This means that in the wild they are basking when the sun is providing UVI of 1 – 3.