condition mean min max 0 h after light 39.1475 37.1971 41.0979 4 h after light 30.68795 27.675 33.7009 8 h after light 12.7195 11.652 13.787 4 h after dark 25.83945 23.8086 27.8703 8 h after dark 40.57735 39.7276 41.4271 12 h after dark 39.2301 37.3926 41.0676