A first analysis of the episodes during summer 1995 has been presented by the EC (EC, 1995). From the data now available it is clear that exceedances of the threshold value set for information to the public were occasionally observed in January - April in the Southern Member States (Greece, Italy, Portugal and Spain). During the first week of May smog was observed in nearly the whole EU: in the period 5-7 May only Finland, Greece and Portugal have not reported an exceedance of the 180 µg/m3 level.episodes, even a normally fit and healthly person can experience irritation of the nose and throat, coughing and breathlessness.