Fig. 12
Convergence properties for atmosphere Model 2 with six-level Ca ii as a function of V-cycle. The Eapprox is calculated based on the relation between the spectral radius and maximum relative population change (Eq. (18)). The computation was performed with three grids, full-weighting, and linear interpolation using ν0 = 20, ν1 = 4, ν2 = 8, ν3 = 32.
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