condition	mean	min	max
4 h after light	3.93295	3.87431	3.9701800000000005
8 h after light	3.9952099999999997	3.89206	4.135
12 h after light	4.101146666666667	3.9876400000000003	4.28359
4 h after dark	3.9649633333333334	3.90109	4.04645
8 h after dark	3.93973	3.9035300000000004	3.9722699999999995
12 h after dark	3.97102	3.9273	4.02411