condition	mean	min	max
4 h after light	255.6	255.6	255.6
8 h after light	251.5	237.0	266.0
12 h after light	223.7	192.5	254.9
4 h after dark	258.3	230.0	286.6
8 h after dark	260.4	229.8	291.0
12 h after dark	273.85	266.7	281.0