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Table 1 Monthly summary of daily mean temperature and daily mortality cases averaged over 47 prefectures between 1972 and 2014 (mean ± standard deviation)

From: Seasonality of mortality under a changing climate: a time-series analysis of mortality in Japan between 1972 and 2015

Month Mean temperature (°C) All-cause mortality (cases) Circulatory mortality (cases) Respiratory mortality (cases)
January 4.17 ±3.99 61.88 ±55.01 22.92 ±17.48 8.55 ±8.93
February 4.75 ±4.31 59.98 ±49.11 21.84 ±16.49 8.49 ±8.39
March 7.91 ±4.29 56.91 ±66.01 20.2 ±15.17 7.58±7.44
April 13.36 ±4.01 53.1 ±43.63 18.36 ±13.9 6.8 ±6.93
May 18 ±3.25 50.23 ±41.53 16.85 ±12.91 6.27 ±6.54
June 21.74 ±2.9 47.66 ±39.94 15.42 ±12.09 5.75 ±6.06
July 25.54 ±3.05 47.86 ±40.59 15.18 ±12.22 5.71 ±6.03
August 26.72 ±2.54 48.05 ±40.92 15.03 ±12.12 5.75 ±6.14
September 22.98 ±3.31 47.58 ±40.33 14.94 ±11.78 5.56 ±6.09
October 17.33 ±3.61 50.58 ±42.29 16.75 ±12.91 5.9 ±6.38
November 11.7 ±4.18 53.98 ±45.01 18.7 ±14.35 6.5 ±6.96
December 6.58 ±4.07 57.41 ±47.78 20.67 ±15.84 7.15 ±7.49
Whole year 15.12 ±8.61 52.91 ±46.88 18.05 ±14.31 6.66 ±7.08