Fig. 3.

Geometric means (points), 95% confidence intervals (bars), 90^th percentiles (square symbols) and 95th percentiles (triangle symbols) of A. Escherichia coli and B. confirmed intestinal enterococci concentrations (colony forming units (cfu)/100 ml) and C. calculated probability of gastrointestinal illness (pGI) (points) on 60 sampling days at the Swansea Bay designated sampling point during summer 2011. The plots also show: (i) the EC Directive levels used for comparison with 90^th and 95th percentile values (Table 1) and (ii) mean daily discharge (m³/s) (line) at the Clyne River gauge (Fig. 1).