condition	mean	min	max
4 h after light	17.2	17.2	17.2
8 h after light	15.05	10.4	19.7
12 h after light	19.5	18.4	20.6
4 h after dark	47.8	44.9	50.7
8 h after dark	26.7	22.4	31.0
12 h after dark	17.0	2.6	31.4