condition	mean	min	max
4 h after light	8.088456666666666	7.829160000000001	8.36957
8 h after light	8.13501	7.88603	8.548910000000001
12 h after light	7.972236666666666	7.7494	8.205789999999999
4 h after dark	8.281996666666666	8.11201	8.49864
8 h after dark	8.429326666666666	8.28278	8.597430000000001
12 h after dark	8.64402	8.44895	9.01337