condition	mean	min	max
0 h after light	15.8139	15.6443	15.9835
4 h after light	7.61825	5.30567	9.93083
8 h after light	7.03275	6.18093	7.88457
4 h after dark	19.285005	4.41501	34.155
8 h after dark	19.2213	16.8486	21.594
12 h after dark	17.59695	17.2143	17.9796