condition	mean	min	max
0 h after light	17.04675	16.8628	17.2307
4 h after light	19.349899999999998	17.6233	21.0765
8 h after light	9.650815	9.23133	10.0703
4 h after dark	11.8945	10.8201	12.9689
8 h after dark	18.726	16.7477	20.7043
12 h after dark	19.1607	18.4501	19.8713