Since the beginning of 2018, data of beach litter have been gathered and processed in the EMODnet Chemistry Marine Litter Database (MLDB). Abundances have been calculated on each beach and year using the following computation: Cigarette related items abundance=(total number of cigarette related items (normalized at 100m))/(Number of surveys on the year) Percentiles 50, 75 & 95 have been calculated taking into account data from all years.
Beach Litter - Mean number of Cigarette related items per 100m & to 1 survey - without UNEP_MARLIN - Official monitoring