condition	mean	min	max
4 h after light	6.4007	6.27894	6.47814
8 h after light	6.37439	6.19517	6.4779
12 h after light	6.336016666666667	6.1317	6.51929
4 h after dark	6.49571	6.40273	6.559080000000001
8 h after dark	6.491156666666666	6.4572199999999995	6.5416099999999995
12 h after dark	6.6548066666666665	6.48495	6.85067