Location of the sample objects in two diagnostic diagrams compared to the loci of evolution tracks for stars rotating with Ω_rot = 0.568 Ω_crit by Ekström et al. (2012), for various ZAMS-masses as indicated. Isochrones for the model grid, corresponding to ages of log τ_evol ∈ {6.85, 7.05, 7.20, 7.40, 7.60} are depicted as dotted lines in the upper panel (increasing in age from top to bottom). Upper panel: sHRD; lower panel: HRD. 1σ error bars are indicated.