condition	mean	min	max
4 h after light	33.8	33.8	33.8
8 h after light	27.55	26.6	28.5
12 h after light	21.4	19.5	23.3
4 h after dark	25.9	23.7	28.1
8 h after dark	31.85	31.8	31.9
12 h after dark	24.7	20.2	29.2