Figure 2.

Hourly changes in absolute humidity and school-day CO2. Time series of average CO2 and indoor absolute humidity during the school day for the week of January 31 to February 4, 2011 in School 1. The dashed line represents mean CO2 levels measured every 5 minutes. The solid line is average indoor absolute humidity for the same week.

Koep et al. BMC Infectious Diseases 2013 13:71   doi:10.1186/1471-2334-13-71
Download authors' original image