Figure 4From: Fine-scale spatial variability of heat-related mortality in Philadelphia County, USA, from 1983-2008: a case-series analysis Principal component scores by ZCTA of significant factors in regression model. Principal component scores by ZCTA for three significant components (a: PC1, b: PC5, c: PC6) included in regression model relating explanatory variables to heat-related mortality. The percentage of variance explained by each component is shown in parentheses.Back to article page