condition	mean	min	max
4 h after light	7.477080000000001	6.00893	8.94523
8 h after light	8.751785	8.33206	9.17151
12 h after light	9.46341	8.15632	10.7705
4 h after dark	14.76215	13.1269	16.3974
8 h after dark	12.4252	12.3788	12.4716
12 h after dark	9.784785	9.01867	10.5509