condition	mean	min	max
4 h after light	5.99869	5.73546	6.26192
8 h after light	7.45913	6.85285	8.06541
12 h after light	12.10515	12.0826	12.1277
4 h after dark	19.9743	19.5815	20.3671
8 h after dark	18.7743	18.5109	19.0377
12 h after dark	12.51585	12.1493	12.8824