condition	mean	min	max
4 h after light	1502.6	1502.6	1502.6
8 h after light	1375.85	1168.6	1583.1
12 h after light	1533.6	1521.5	1545.7
4 h after dark	1332.9	971.7	1694.1
8 h after dark	1174.8	1073.0	1276.6
12 h after dark	1307.85	1202.5	1413.2