condition	mean	min	max
4 h after light	7.95204	7.799510000000001	8.12619
8 h after light	7.7332600000000005	7.5678600000000005	8.01474
12 h after light	8.296736666666666	8.22776	8.38355
4 h after dark	8.100943333333333	7.93266	8.37629
8 h after dark	7.979313333333334	7.84359	8.13526
12 h after dark	8.144563333333332	8.01573	8.34197