rules that are the thresholds to identify the boundaries of the
processes considered quantitatively significant and relevant.
It was decided to exclude any impact of less than 5% of the final
value, for reasons of numerical strength and agility in gathering
data (Bevilacqua et al., 2007). Regarding the types of activities, none
has been excluded, in order to avoid systematic errors and there is
been followed in the normal course of duties, without examining
incidental or exceptional cases.