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. 2021 Mar 12;12:1643. doi: 10.1038/s41467-021-21785-1

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© Battelle Memorial Institute 2021, corrected publication 2022

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Fig. 1 — a Cooling degree hours (CDH) b Heating degree hours (HDH). Degree hours are calculated as the difference in temperature in (°F) from a threshold temperature of 65 °F in a given hour. Cooling and heating degree hours correspond, respectively, to positive and negative differences. Mean and peak degree hours are calculated as the average and maximum difference over the full year. See “Methods” for more calculations and details.