Time series and regression lines for annual average deepwater temperatures
(A) Windermere North Basin 60 m and the first 10-week period (Q1), (B) Lake Geneva, (C) Zürichsee, (D) Walensee, (E)
Lake Constance, (F) Ammersee, (G) Lake Vänern, (H) Lake Vättern, (I) Hallstättersee, (J) Traunsee, (K) Mondsee, and (L)
Attersee for the depths indicated . T-increase in all lakes was 0.1–0.2 °C/decade.