condition	mean	min	max
4 h after light	1258.2	1258.2	1258.2
8 h after light	1407.9	1317.4	1498.4
12 h after light	1612.75	1534.0	1691.5
4 h after dark	1989.5	1825.5	2153.5
8 h after dark	2179.6	2087.6	2271.6
12 h after dark	1891.15	1749.8	2032.5