condition	mean	min	max
0 h after light	19.987650000000002	19.7239	20.2514
4 h after light	8.37673	8.31947	8.43399
8 h after light	7.29758	7.28057	7.31459
4 h after dark	9.2554	7.8137	10.6971
8 h after dark	10.528680000000001	9.97676	11.0806
12 h after dark	13.172005	9.89181	16.4522