condition	mean	min	max
4 h after light	498.3	498.3	498.3
8 h after light	508.05	462.5	553.6
12 h after light	504.2	435.9	572.5
4 h after dark	507.5	357.7	657.3
8 h after dark	453.0	441.7	464.3
12 h after dark	389.2	346.4	432.0