condition	mean	min	max
4 h after light	9.8	9.8	9.8
8 h after light	34.7	15.8	53.6
12 h after light	18.4	15.4	21.4
4 h after dark	32.55	11.6	53.5
8 h after dark	11.65	7.9	15.4
12 h after dark	17.0	8.9	25.1