condition	mean	min	max
4 h after light	19.9	19.9	19.9
8 h after light	31.35	8.6	54.1
12 h after light	36.25	19.3	53.2
4 h after dark	52.7	49.0	56.4
8 h after dark	29.75	15.3	44.2
12 h after dark	17.3	5.8	28.8