condition	mean	min	max
4 h after light	18.756	15.6643	21.8477
8 h after light	2.87514	2.78407	2.96621
12 h after light	1.200015	1.12931	1.27072
4 h after dark	0.48072833333333337	0.384612	0.53429
8 h after dark	4.15223	3.93368	4.35749
12 h after dark	9.281223333333333	8.93885	9.54842