condition	mean	min	max
4 h after light	6.7633	6.59668	6.943639999999999
8 h after light	7.046036666666667	6.793710000000001	7.35353
12 h after light	7.02442	6.86521	7.2925
4 h after dark	6.84024	6.657	7.09335
8 h after dark	6.809326666666667	6.614960000000001	7.13525
12 h after dark	6.8274566666666665	6.758710000000001	6.9355199999999995