condition	mean	min	max
4 h after light	7.9114	7.5379	8.18622
8 h after light	8.14847	7.9608300000000005	8.44237
12 h after light	7.961466666666667	7.747910000000001	8.12423
4 h after dark	7.714146666666666	7.41803	8.02933
8 h after dark	7.333996666666667	7.0488	7.73532
12 h after dark	7.5201433333333325	7.306089999999999	7.9012199999999995