condition	mean	min	max
4 h after light	30.7975415	24.644387	36.950696
8 h after light	21.226227	20.189459	22.262995
12 h after light	16.9194335	13.041897	20.79697
4 h after dark	20.982221	19.180031	22.784411
8 h after dark	20.8420985	18.899786	22.784411
12 h after dark	24.135344	24.135344	24.135344