Spot lifetime estimation expressed in radians per days as a function of the effective temperature in K. The orange line is the T_eff − ΔΩ relation proposed by Collier Cameron (2007), with ΔΩ in days. The dark red line is the relation from Küker & Rüdiger (2011), with the dashed lines representing the two components of this relation. The hatched regions are the ones where Eq. (20) is not verify, for instance the DR may affect the lifetime estimation, τ_life.