condition mean min max 4 h after light 4.51412 3.89042 5.13782 8 h after light 4.56132 4.19598 4.92666 12 h after light 6.103275 5.85322 6.35333 4 h after dark 7.0789599999999995 6.85516 7.32325 8 h after dark 7.938923333333333 7.4681 8.38279 12 h after dark 5.66118 5.34732 6.07762