Angular momentum luminosity at the base of the convective envelope of IGW generated by Reynolds-stress in the external convective layers as a function of emission frequency ω and degree ℓ. The color axis is in log and white areas correspond to logℒ_J,surf < 22. The plots are shown for the 1 M_⊙ model at four ages along the PMS (5.8, 14, 35, and 55 Myr from top left to bottom right; the corresponding values of T_eff are 4277, 4357, 5560, and 5612 K).