Fig. 2

Geostatistical time series of As concentrations (1990–2020) in mosses (measured value classification according to ICP Vegetation [2]). SH Schleswig–Holstein, HH Hamburg, NI Lower Saxony/Bremen, MV Mecklenburg-Western Pomerania, NW North-Rhine Westphalia, ST Saxony-Anhalt, BE Berlin, SL Saarland, RP Rhineland-Palatinate, HE Hesse, TH Thuringia, SN Saxony, BW Baden-Wuerttemberg, BY Bavaria. 1 Lower Rhine 2 Ruhr area 3 Harz Mountains 4 Halle/Leipzig area 5 Ore Mountains 6 Northern Upper Rhine 7 Alpine region