condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	19.0	3.6	34.4
12 h after light	23.85	6.1	41.6
4 h after dark	36.25	22.1	50.4
8 h after dark	25.7	15.1	36.3
12 h after dark	20.4	15.8	25.0