Figure 1From: Impacts of hot and cold spells differ for acute and chronic ischaemic heart diseases Mean annual cycle (a), mean weekly cycle (b) and long-term changes (c) in mortality due to chronic ischaemic heart diseases (chronic IHD) and acute myocardial infarction (AMI) over 1994–2009, for the whole population. The weekly cycle of mortality (b) is expressed by the ratio of the mean mortality on a given day to the overall mean mortality.Back to article page