condition	mean	min	max
4 h after light	4.17528	3.9176800000000003	4.43371
8 h after light	4.077873333333334	3.98339	4.14659
12 h after light	4.15663	4.11637	4.17858
4 h after dark	4.161266666666667	3.98494	4.328530000000001
8 h after dark	4.126483333333334	4.11854	4.140569999999999
12 h after dark	4.17073	4.12907	4.23851