A new scatter plot (figure \ref{277579}) was done using this restricted area. The results of this secondary analysis are much more coherent with what one would expect when testing for inverse correlation of noise and greenness. The fitted line has indeed a negative slope, which indicates an inverse correlation. The p-value of 0.01 is also an indication that the pair of sound and greenness values are not put together randomly but respects some kind of a logic, that is, the greener the area, the less noisy it is.