condition	mean	min	max
4 h after light	8.938180000000001	7.88482	9.99154
8 h after light	6.62247	6.28811	6.95683
12 h after light	8.61948	8.0393	9.19966
4 h after dark	12.7038	11.7023	14.1861
8 h after dark	13.4081	12.4103	14.3924
12 h after dark	9.100616666666667	7.75654	11.5705