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. 2021 Apr 17;20:190. doi: 10.1186/s12936-021-03718-x

Fig. 3.

Fig. 3

Changes in the elevation threshold for malaria over time in the Ethiopian Highlands. Solid lines: mean elevation above mean sea level (m) where the 10-day average minimum temperature in a year never exceeds 18 °C (red) and 15 °C (blue). Dashed lines indicate the uncertainty in mean elevation. Coloured bars show anomalous values (°C) of the October–December “Niño 3.4” sea surface temperature index in the Pacific Ocean. Trend lines and associated slopes are also shown [42]