condition mean min max 4 h after light 7.346045 6.49662 8.19547 8 h after light 6.9829550000000005 6.42046 7.54545 12 h after light 11.1082 10.9346 11.2818 4 h after dark 13.8454 13.8247 13.8661 8 h after dark 12.20965 11.5419 12.8774 12 h after dark 10.856950000000001 10.4235 11.2904