31,7Hz - Width(30.2), Length(32.7)
63,5Hz - Height(66.5), Width(60.4), Length(65.3)
127Hz - bis(132.9), (120.9), (130.6)

Solutions to adress this problem are (as an ex.)1. change room dimensions (not all of them at the-same-time/the-same-way but make one bigger the other smaller or maintain one and change the other), 2. acoustically treat the room, and/or 3. equalize (slide down these freqs to have some control on them - i.e. reverberation or resonance)
(S.Shenefield 1997)