condition	mean	min	max
4 h after light	18.13305	17.0778	19.1883
8 h after light	8.664760000000001	7.63044	9.69908
12 h after light	9.72373	9.01006	10.4374
4 h after dark	11.005600000000001	10.2095	11.8017
8 h after dark	14.5226	14.2416	14.8036
12 h after dark	15.4845	15.0375	15.9315