condition	mean	min	max
4 h after light	8.40669	8.19967	8.62358
8 h after light	8.078306666666666	7.95292	8.240269999999999
12 h after light	8.239306666666668	7.99242	8.51401
4 h after dark	8.09047	7.910260000000001	8.355839999999999
8 h after dark	8.247456666666666	7.94495	8.56124
12 h after dark	8.45935	8.17698	8.6432