condition mean min max 0 h after light 8.760019999999999 7.10204 10.418 4 h after light 8.015525 7.50238 8.52867 8 h after light 4.098475 2.25848 5.93847 4 h after dark 8.486995 8.22066 8.75333 8 h after dark 8.410655 6.74481 10.0765 12 h after dark 7.40072 6.44243 8.35901