condition mean min max 4 h after light 2.75337 2.54229 2.96445 8 h after light 2.449595 2.20575 2.69344 12 h after light 2.592055 2.33457 2.84954 4 h after dark 4.0926 3.78996 4.39524 8 h after dark 3.2124449999999998 3.02007 3.40482 12 h after dark 3.34742 3.18037 3.51447