Annual temperature maximum TXXX (top), mean daily temperature maximum TX in summer (1 June–31 Aug) at DV from 1911 until 2023 as far as available (center). In addition, the North American mean summer temperature deviation from the 20th century mean (bottom). The 30-year MEVSS-curves are plotted bold and the + 3 STD MEVSS curve of TXXX dashed.