condition mean min max 4 h after light 3.11327 2.17967 4.59426 8 h after light 1.839065 0.942885 2.44619 12 h after light 2.4963333333333333 1.62887 3.25353 4 h after dark 3.38632 2.87085 4.22078 8 h after dark 2.80139 2.72777 2.8999 12 h after dark 2.21895 1.63341 2.60042