Table 1.

Nationwide summary of daily mean temperature (℃), daily death (numbers of cases) and weekly influenza-like illness (ILI) between 1999 and 2015

Variables	Median (IQR)	Mean (SD)	Range
Mean temperature	16.09 (8.04 to 22.8)	15.6 (8.2)	−1.0 to 30.7
All-cause mortality	3046 (2726 to 3350)	3058 (443.7)	2114 to 4712
Circulatory mortality	866 (768 to 1003)	892.6 (157.1)	570 to 1454
Respiratory mortality	464 (388 to 535)	465.2 (105.9)	47 to 1072
ILI	7626 (1575 to 106 199)	142 113 (295 087.3)	7 to 1 652 147

Daily mortality on the day of the Great East Japan Earthquake (11 March 2011) was excluded from our analysis.