condition	mean	min	max
4 h after light	2.6327350000000003	2.42754	2.83793
8 h after light	2.115005	1.92929	2.30072
12 h after light	2.109525	1.79822	2.42083
4 h after dark	4.07375	3.5489	4.5986
8 h after dark	3.497725	3.49208	3.50337
12 h after dark	2.968045	2.56106	3.37503