condition	mean	min	max
4 h after light	7.082716666666667	6.8167800000000005	7.2895
8 h after light	7.088033333333334	6.9280100000000004	7.291589999999999
12 h after light	7.286576666666667	7.169580000000001	7.354189999999999
4 h after dark	7.154403333333334	7.0484100000000005	7.264880000000001
8 h after dark	7.05447	6.943560000000001	7.21065
12 h after dark	6.854496666666667	6.51105	7.031110000000001