condition	mean	min	max
0 h after light	4.16697	3.06287	5.27107
4 h after light	10.41891	9.36252	11.4753
8 h after light	12.06645	11.2241	12.9088
4 h after dark	18.31655	13.7713	22.8618
8 h after dark	8.508165	8.38601	8.63032
12 h after dark	7.205415	5.07538	9.33545