The graphs are based on the annual mean concentration values; they present the range of concentrations at all station types (in μg/m3) officially reported by the EU Member States and how the concentrations relate to the limit value set by EU legislation (marked by the red line).
The diagram indicates the lowest and highest observations, the means and the lower and upper quartiles. The lower quartile splits the lowest 25 % of the data and the upper quartile splits the highest 25 % of the data.
EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
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The recommended temperature for a refrigerator is between 1 – 4 °C
and for the freezer it should be set at -18 °C. Each degree below these temperatures makes no difference as to how well the food is preserved, but it does increase energy consumption by approximately five per cent. Place a thermometer in the refrigerator and the freezer to check the temperature!
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