condition	mean	min	max
4 h after light	13.2	13.2	13.2
8 h after light	18.3	7.2	29.4
12 h after light	14.1	3.9	24.3
4 h after dark	19.85	3.0	36.7
8 h after dark	24.5	4.9	44.1
12 h after dark	16.0	5.8	26.2