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Box (95% confidence interval) and whisker (range) plots for comparisons of geometric mean (GM) daily faecal indicator organism (FIO) concentrations (colony forming units (cfu)/100 ml) and standard deviation (SD) of daily log10 FIO concentrations in groups of days (total = 60) categorized by daily probability of gastrointestinal illness (pGI, Fig. 3C) at the Swansea Bay designated sampling point during summer 2011.
