condition	mean	min	max
0 h after light	17.85215	17.4771	18.2272
4 h after light	8.141935	7.94772	8.33615
8 h after light	4.26814	4.06745	4.46883
4 h after dark	10.452695	9.75969	11.1457
8 h after dark	14.640450000000001	14.3041	14.9768
12 h after dark	14.61805	14.0379	15.1982