condition	mean	min	max
4 h after light	7.9	7.9	7.9
8 h after light	35.25	16.8	53.7
12 h after light	11.9	2.3	21.5
4 h after dark	18.4	16.0	20.8
8 h after dark	13.0	9.0	17.0
12 h after dark	9.85	2.4	17.3