condition	mean	min	max
4 h after light	8.158116	8.117862	8.19837
8 h after light	9.399447	9.241865	9.557029
12 h after light	8.656942	8.145921	9.167963
4 h after dark	8.312289	8.260728	8.36385
8 h after dark	8.3080605	8.031606	8.584515
12 h after dark	8.250177	8.250177	8.250177