condition	mean	min	max
4 h after light	12.113465	9.98953	14.2374
8 h after light	7.912435	7.18605	8.63882
12 h after light	6.763805	5.54144	7.98617
4 h after dark	1.7277200000000001	1.6494	1.80604
8 h after dark	8.28641	7.96385	8.60897
12 h after dark	11.37905	10.23	12.5281