condition	mean	min	max
4 h after light	6.506615	5.51794	7.49529
8 h after light	5.44636	4.77978	6.11294
12 h after light	8.34829	6.69608	10.0005
4 h after dark	13.5679	11.2432	15.8926
8 h after dark	14.4193	14.1886	14.65
12 h after dark	11.44455	11.1628	11.7263