condition	mean	min	max
4 h after light	8.851696666666667	8.74848	8.91349
8 h after light	8.766210000000001	8.65816	8.83445
12 h after light	8.441576666666666	8.32202	8.59426
4 h after dark	8.284906666666666	8.0473	8.45849
8 h after dark	8.11627	7.88812	8.32945
12 h after dark	8.38947	8.15662	8.582089999999999