condition	mean	min	max
4 h after light	18.0	18.0	18.0
8 h after light	11.3	5.9	16.7
12 h after light	17.2	5.2	29.2
4 h after dark	26.75	19.1	34.4
8 h after dark	38.8	23.7	53.9
12 h after dark	37.6	7.9	67.3