condition mean min max 4 h after light 0.0061849 0.0 0.0123698 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.013527585 0.00534917 0.021706 8 h after dark 0.00268062 0.0 0.00536124 12 h after dark 0.0 0.0 0.0