condition	mean	min	max
4 h after light	6.956723333333334	6.84647	7.121910000000001
8 h after light	7.338933333333333	7.2178	7.474360000000001
12 h after light	8.211396666666666	8.13603	8.29017
4 h after dark	7.551623333333334	7.52555	7.5960600000000005
8 h after dark	7.45405	7.292260000000001	7.6924399999999995
12 h after dark	7.107446666666666	6.9809	7.209639999999999