condition mean min max 0 h after light 2.710735 2.33921 3.08226 4 h after light 2.9055850000000003 2.67058 3.14059 8 h after light 4.166845 3.89817 4.43552 4 h after dark 4.640465 4.05218 5.22875 8 h after dark 4.4793 4.26716 4.69144 12 h after dark 2.3896300000000004 1.5857 3.19356