condition	mean	min	max
4 h after light	4.015293333333333	3.9855199999999997	4.0357199999999995
8 h after light	3.9323766666666664	3.85644	3.9945699999999995
12 h after light	3.9300766666666664	3.7859	4.12259
4 h after dark	3.9227100000000004	3.8796800000000005	3.9643900000000003
8 h after dark	3.9530066666666666	3.7880199999999995	4.08281
12 h after dark	3.9156999999999997	3.84754	4.02229