Fig. 2From: Evolution of the threshold temperature definition of a heat wave vs. evolution of the minimum mortality temperature: a case study in Spain during the 1983–2018 perioda Temporal evolution of the daily mortality rate for Barcelona during the 1983–2018 period; b temporal evolution of the daily mortality rate prewhitened series for this period, and c graphic illustration of the threshold temperature for the 1983–1988 periodBack to article page