Fig. 3
From: The effect of cold waves on mortality in urban and rural areas of Madrid
Map with the analyzed groups showing the threshold temperatures for the beginning of the cold wave. Its respective percentiles of summer temperatures are indicated between parentheses and preceded by “P”. White areas are municipalities not included in considered groups for the study. This study groups are Rural Northern Mountains (RNM), Rural Center (RC), Urban Metropolitan Center (UMC) and Southern Rural (SR)