condition mean min max 4 h after light 0.0273536 0.0 0.0547072 8 h after light 0.0073873 0.0 0.0147746 12 h after light 0.0090222 0.0 0.0180444 4 h after dark 0.0 0.0 0.0 8 h after dark 0.003951815 0.0 0.00790363 12 h after dark 0.02620505 0.0 0.0524101