The distribution of physiologically active, eccrine sweat glands in humans. Data are means (with 95% confidence intervals) derived across 31 studies, with an average sample size of 23 individuals per data set. The numbers above each bar indicate data sets used for that site, with the site-specific sample sizes in parenthesis (B). Means were computed as follows: regional density = ((N1 × density1) + (N2 × density2) + … (Ni × densityi)) / NTotal (where N is the sample size and subscript numerals refer to separate studies). (A) shows all sites investigated. These data were subsequently grouped into 14 larger regions (B). The active sweat glands for one region (axilla) have not been investigated, so this value was taken to be 90% of that reported in Table1. Sources: Clark and Lhamon, Ogata, Randall, Thompson, Willis et al., Roberts et al., Sato and Dobson, Inoue et al., Kondo et al., Peter and Wyndham, Buono, Gibson and Shelley, MacKinnon (with the original calculation error corrected), Collins et al.,, Hellon and Lind, Silver et al., Ojikutu, Sargent and Weinman, Juniper and Dykman, Toda, Bar-Or et al., Knip, Knip, Schaefer et al., Catania et al., Behm et al., Inoue et al., Kondo et al., Inoue et al., Welch et al. and Madeira et al..