condition	mean	min	max
0 h after light	18.4327	15.9495	20.9159
4 h after light	13.1691	11.3882	14.95
8 h after light	10.675	8.9567	12.3933
4 h after dark	20.743850000000002	16.8629	24.6248
8 h after dark	20.36855	18.2928	22.4443
12 h after dark	21.016199999999998	16.4682	25.5642