condition	mean	min	max
4 h after light	3.7690599999999996	3.7355099999999997	3.81665
8 h after light	3.84355	3.7602900000000004	3.9682699999999995
12 h after light	3.8897166666666667	3.7501	4.01543
4 h after dark	3.725103333333333	3.64635	3.79491
8 h after dark	3.7291766666666666	3.6638900000000003	3.79525
12 h after dark	3.7758333333333334	3.66194	3.9788099999999997