condition	mean	min	max
4 h after light	6.339063333333334	6.06659	6.53875
8 h after light	6.324113333333333	6.01896	6.5149099999999995
12 h after light	6.08598	5.88791	6.28374
4 h after dark	6.48815	6.24515	6.82405
8 h after dark	6.897623333333334	6.73118	7.08628
12 h after dark	7.2806	7.1493	7.510489999999999