condition	mean	min	max
4 h after light	1690.4	1690.4	1690.4
8 h after light	1528.85	1426.2	1631.5
12 h after light	1246.35	1223.8	1268.9
4 h after dark	1494.55	1164.0	1825.1
8 h after dark	1664.8	1611.5	1718.1
12 h after dark	1493.6	1363.3	1623.9