condition	mean	min	max
0 h after light	19.36085	17.4701	21.2516
4 h after light	14.99025	13.9863	15.9942
8 h after light	21.27315	20.324	22.2223
4 h after dark	31.297850000000004	23.3777	39.218
8 h after dark	18.49705	14.8722	22.1219
12 h after dark	19.11235	18.2857	19.939