Widén-Nilsson et al. (2016) Widén-Nilsson E., Löfgren S. & Tengdelius-Brunell J. 2016. Typhalter för skog, hygge, sankmark, fjäll och öppen mark i PLC6. Underlagsrapport till Pollution Load Compilation 6. SMED Rapport Nr 188 2016. PLC6-typical concentration from forests in southern Sweden. Median value from spring samples in small forests catchments in the counties of Halland, Jönköping and Västra Götaland, according to data from Fröberg and Löfgren (2014, Table 1).