activity_stats          Compute physical activity summaries of minute
                        level activity data
arctools-package        arctools: processing and physical activity
                        summaries of minute-level activity data
extdata_fnames          Names of exemplary accelerometry data file.
get_actigraph_SN        Get Actigraph device serial number
get_valid_day_flag      Compute valid day flag
get_wear_flag           Compute wear/non-wear flag
impute_missing_data     Impute missing data
midnight_to_midnight    Expand activity data vector into
                        midnight-to-midnight format
summarize_PA            Compute physical activity summaries of minute
                        level activity data.
