condition	mean	min	max
4 h after light	19.3422775	17.358338	21.326217
8 h after light	17.8112555	17.165725	18.456786
12 h after light	16.633076000000003	13.83004	19.436112
4 h after dark	16.585537000000002	14.48657	18.684504
8 h after dark	18.755603	15.827026	21.68418
12 h after dark	15.255643	15.255643	15.255643