Figure 2.

Average levels of ETS in restaurants, cafes and bars in Greece compared to the US, the UK and Ireland before and after the implementation of smoking bans measured in PM_2.5in μg/m³. *Restaurants, cafes and bars in Greece (combined from tables 1 and 2 in non-smoking areas) **States measured before and after a smoking ban [18] *** Smoking areas [23] **** Ireland [24].