Evolution of the stellar rotation period P_⋆ for each parameter variation: initial rotation rate Ω_init (panel a), stellar magnetic field strength B_⋆ (panel b), APSW efficiency W (panel c), amount of energy of the infalling material added into the star β_up (panel d), the final stellar mass at 1 Myr M_⋆ (panel e), and the initial stellar radius R_init (panel f). The reference values are in boldface. For comparison, the critical rotation period is shown for each evolution as dotted lines.