condition mean min max 0 h after light 1.9742899999999999 1.57774 2.37084 4 h after light 1.49372 1.46915 1.51829 8 h after light 2.1434 1.33837 2.94843 4 h after dark 2.32959 1.97997 2.67921 8 h after dark 3.24962 2.95984 3.5394 12 h after dark 2.11695 1.75069 2.48321