condition	mean	min	max
4 h after light	7.812643333333333	7.64169	7.908119999999999
8 h after light	7.72882	7.6743	7.81553
12 h after light	7.74572	7.26	8.0624
4 h after dark	7.64412	7.4768	7.78587
8 h after dark	7.776073333333334	7.61698	7.88895
12 h after dark	7.662093333333333	7.442989999999999	7.79953