footnote_code footnote_text A Includes naps and spells of sleeplessness. B Individuals may have worked at more than one location. C See Footnote C on www.bls.gov/tus/footnote.htm. D See Footnote D on www.bls.gov/tus/footnote.htm. F See Footnote F on www.bls.gov/tus/footnote.htm. G See Footnote G on www.bls.gov/tus/footnote.htm. H Persons of Hispanic or Latino ethnicity may be of any race. I Includes persons with a high school diploma or equivalent. J Includes persons with bachelor's, master's, professional, and doctoral degrees. K Excludes household and personal mail, e-mail, and messages. M See Footnote M on www.bls.gov/tus/footnote.htm. N See Footnote N on www.bls.gov/tus/footnote.htm. S Estimate is suppressed because it does not meet the American Time Use Survey publication standards. Z Estimate is approximately zero.