condition	mean	min	max
4 h after light	12.22715	11.0256	13.4287
8 h after light	7.93997	7.49287	8.38707
12 h after light	5.96986	5.71791	6.22181
4 h after dark	11.0305	10.1776	11.976
8 h after dark	10.675166666666668	10.0484	11.7944
12 h after dark	15.831633333333333	15.1062	17.2242