condition	mean	min	max
4 h after light	16.5293385	16.220635	16.838042
8 h after light	21.6106415	20.164651	23.056632
12 h after light	16.1042795	13.123666	19.084893
4 h after dark	19.706030499999997	17.531556	21.880505
8 h after dark	17.6662455	17.272114	18.060377
12 h after dark	17.031474	17.031474	17.031474