WMAP Acbar Boomerang CBI VSA Multipole moment ℓ Angular scale ℓ (ℓ+1)Cℓ ⁄ 2π [ μK2 ] 90° 2° 0.5° 0.2° 10 100 500 1000 1500 0 1000 2000 3000 4000 5000 6000