condition	mean	min	max
4 h after light	18.339	16.3971	20.2809
8 h after light	17.07275	14.6711	19.4744
12 h after light	17.564965	9.85903	25.2709
4 h after dark	14.40495	12.993	15.8169
8 h after dark	19.12755	18.0706	20.1845
12 h after dark	20.32555	15.6514	24.9997