condition	mean	min	max
4 h after light	12.1	12.1	12.1
8 h after light	12.55	10.8	14.3
12 h after light	21.3	17.3	25.3
4 h after dark	14.85	13.0	16.7
8 h after dark	19.0	10.1	27.9
12 h after dark	24.05	21.8	26.3