That study was conducted in Nashville (TN) : during six weeks, measurements using passive ozone samplers were made on a group of school children aged 10 to 12 to estimate the outdoor/indoor /personal ozone exposure. Personal ozone exposure depends of the time spent indoors and outdoors.
Outdoor/Indoor/Personal ozone exposures of children in Nashville, Tennessee
Journal of Air Waste Manag. Assoc. 2004, March, Vol 54, n° 3, pp 352-359