condition	mean	min	max
4 h after light	6.425563333333333	6.2313	6.714119999999999
8 h after light	6.2093533333333335	6.09256	6.337619999999999
12 h after light	6.03282	5.75586	6.32074
4 h after dark	6.29726	6.10869	6.4163
8 h after dark	6.20812	5.92325	6.35925
12 h after dark	6.657923333333333	6.3165	6.9882