condition	mean	min	max
4 h after light	4.45725	3.66777	5.24673
8 h after light	2.23646	1.62512	2.8478
12 h after light	2.016105	2.00586	2.02635
4 h after dark	3.388395	2.52079	4.256
8 h after dark	2.116845	2.10089	2.1328
12 h after dark	1.838695	1.5911	2.08629