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99,109 items of data are available, covering 99,109 participants. Defined-instances run from 0 to 0, labelled using Instancing 93.
Average compound dataset is 92b, largest is 119b.
The average proportion of time spent sleeping per hour across all days. The data is stored as 24 comma seperated values, each representing an hour of the day, starting with 12am and ending with 11pm. Please use the fields in Category 1011 to quality control participants for completeness of the accelerometry recording period and the related data fields for the corresponding proportion for the other activity levels. Where data was missing for a participant, the value was imputed from the available data as outlined in Return 2040. Please see Publication 5649 for more details.