condition	mean	min	max
4 h after light	18.12845	17.771	18.4859
8 h after light	16.12205	14.9452	17.2989
12 h after light	17.4455	15.0628	19.8282
4 h after dark	18.340466666666668	17.6208	19.3728
8 h after dark	20.061233333333334	19.0561	21.4954
12 h after dark	18.7882	18.1731	19.12