condition	mean	min	max
4 h after light	4.062445	3.799	4.32589
8 h after light	2.70561	2.4977	2.91352
12 h after light	2.49463	2.48	2.50926
4 h after dark	9.942530000000001	9.63296	10.2521
8 h after dark	12.84225	12.5602	13.1243
12 h after dark	12.41615	11.9326	12.8997