condition	mean	min	max
4 h after light	4.141575	2.42093	5.86222
8 h after light	3.7101249999999997	3.27246	4.14779
12 h after light	6.698605000000001	6.42766	6.96955
4 h after dark	14.175333333333333	13.0948	14.9528
8 h after dark	15.447166666666668	9.4014	18.882
12 h after dark	3.7554266666666667	1.14413	5.66362