condition	mean	min	max
4 h after light	9.361941	8.618207	10.105675
8 h after light	8.0817315	7.726466	8.436997
12 h after light	8.2741285	8.260554	8.287703
4 h after dark	8.9909555	8.827229	9.154682
8 h after dark	8.567795	7.81518	9.32041
12 h after dark	8.002301	8.002301	8.002301