condition mean min max 0 h after light 8.565010000000001 8.07775 9.05227 4 h after light 6.151675 5.25002 7.05333 8 h after light 6.149710000000001 5.79495 6.50447 4 h after dark 6.5182150000000005 3.66079 9.37564 8 h after dark 10.659285 9.36487 11.9537 12 h after dark 7.0623249999999995 7.05969 7.06496