condition	mean	min	max
0 h after light	6.781785	6.09762	7.46595
4 h after light	6.03897	5.79882	6.27912
8 h after light	7.537145	6.89668	8.17761
4 h after dark	8.069015	7.18637	8.95166
8 h after dark	8.580375	7.74029	9.42046
12 h after dark	6.29523	5.82442	6.76604