condition	mean	min	max
4 h after light	3.51715	2.81925	4.21505
8 h after light	7.10044	7.07432	7.12656
12 h after light	20.137050000000002	19.107	21.1671
4 h after dark	13.4699	12.0526	14.5295
8 h after dark	8.038083333333333	7.42414	8.77234
12 h after dark	3.60716	1.4921	4.83458