Top: PDF of the x exponent of our adopted gyrochronological relations expressed in Eqs. (1) and (2) built upon all the stellar targets analysed in this work. The vertical solid red line marks the median of the distribution, while the two vertical dashed red lines marks the σ levels corresponding to the 15.87th and 84.14th percentiles. Bottom: same as the top panel, but for the y exponent of Eq. (2). We note that the top panel is in log scale.