condition	mean	min	max
4 h after light	2.56536	1.8676	3.26312
8 h after light	1.93899	1.67408	2.2039
12 h after light	2.87726	2.45061	3.30391
4 h after dark	8.880875	8.32202	9.43973
8 h after dark	15.757200000000001	13.9882	17.5262
12 h after dark	13.036449999999999	11.3477	14.7252