Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Box and whisker diagrams of a aerobic mesophilic count, b aerobic psychrotrophic count, c total coliforms count and d yeast and mould count. Horizontal bars indicate mean values, boxes show the standard deviation, whisker lines indicate the ranges and box shows median values
