Fig. 2

Correlation between latitude and number of deaths/1 M people. a The relationship between the number of deaths/1 M people and the latitude (used as a proxy of the average monthly high temperatures registered) for the months of March (left) and April (right) 2020 is represented for 25 areas located in Europe and in the US using scatter plots graphs. b The not linear correlation between these two variables is calculated using the squared transformation of the latitudes. The p-values for each month are indicated