Fig. 4.

Example of MA = 2. Item a overlapping $\overline{R{R}_{\mathit{Fn}}}$ interval of subject 05 (female, 16 years old) at 50 min with the effect of the MA = 2 filter (yellow color) and $R{R}_{\mathit{Fn}}$ without the effect (blue). Item a a subject female, 16 years old. b it’s histogram.

Source elaborated by the author