condition	mean	min	max
4 h after light	7.9298090000000006	7.765436	8.094182
8 h after light	7.7695405	7.36571	8.173371
12 h after light	7.8165705	7.765436	7.867705
4 h after dark	7.480906	7.457518	7.504294
8 h after dark	7.3932400000000005	6.918775	7.867705
12 h after dark	8.691156	8.691156	8.691156