Cyan envelope: characteristic amplitude of δρ/ρ in real Coma, extracted from deep Chandra observations (Churazov et al., in prep.; ~500 ks), within the statistical uncertainties. Black line: A_δ(k) prediction based on our modeling. The state of the ICM is best matched by our simulations with highly suppressed conduction, f ≃ 10^-3, since the spectrum shows a shallow slope, α_c ≃ 0.36, slightly steeper than Kolmogorov. The normalization (10 percent) indicates that the level of turbulence is M ≃ 0.45. The spectrum also suggests an injection scale of ~250 kpc, although the precise value is uncertain due to the selection of the unperturbed model.