condition	mean	min	max
0 h after light	2.628095	2.3915	2.86469
4 h after light	10.733305	8.75671	12.7099
8 h after light	17.70945	16.5244	18.8945
4 h after dark	9.39682	9.37829	9.41535
8 h after dark	8.025555	7.58703	8.46408
12 h after dark	5.76201	5.59705	5.92697