Comparison as shown in Fig. 9. Left-hand panel: first class of solution (CS-1) with isochrones with slow initial rotation rates and ages around 202 Myr. Right-hand panel: second class of solution (CS-2) with isochrones with high rotations and ages around 288 Myr. The values are selected from Table 2. Right-hand panel: red vertical markers in the Hertzsprung gap indicate intervals of ΔM = 0.0005 M_⊙.