Fig 4.

Arithmetic means comparing TSNA concentrations in snus by brand family (n = 25) and manufacturer in Europe [A-G] and the US [H-J]). Only products made by manufacturer A appears to conform to the GothiaTek® quality standard. All concentrations are expressed as micrograms per gram (μg/g) product (wet weight basis). Note. A-J represent the different manufacturers: A) Swedish Match, B) V2 Tobacco, C) Imperial Tobacco Group, D) GN Tobacco Sweden AB, E) Gotland Snus AB, F) British American Tobacco, G) AG Snus, H) RJ Reynolds, I) Philip Morris, and J) U.S. Tobacco Company. Arithmetic means and standard errors are estimates from 10,000 bootstrap resamples of the data. Error bars represent bootstrapped standard errors.