condition	mean	min	max
4 h after light	8.701933333333333	8.48131	8.90007
8 h after light	8.625073333333333	8.35557	8.959539999999999
12 h after light	8.271410000000001	7.72607	8.5592
4 h after dark	8.329536666666666	7.811030000000001	8.60699
8 h after dark	8.248736666666666	7.836189999999999	8.57962
12 h after dark	8.08848	7.73343	8.36358