condition	mean	min	max
4 h after light	15.51135	14.8958	16.1269
8 h after light	14.2486	14.0118	14.4854
12 h after light	13.77075	13.2094	14.3321
4 h after dark	15.32365	15.0075	15.6398
8 h after dark	19.72285	18.6824	20.7633
12 h after dark	18.83435	18.8255	18.8432