Admissible parameter values of the ℳ2 broken power-law model approximating Datura family absolute magnitude distribution in the range H e (H₁, H₂) = (18.09, 20). There are three solved-for parameters in the model: (i) the break-point magnitude H_break, (ii) the power-law exponent γ₁ for H ≤ H_break, and (iii) the power-law exponent γ₂ for H ≥ H_break. Each of the panels shows a projection of the solution onto different 2D subspaces of the 3D space of parameters (H_break,γ₁,γ₂). The dashed line delimits 99% confidence limit zone of the solution, and the gray-scale is proportional to the probability density distribution of the solutions. The best-fit parameter combination is shown by red star symbol. The gray histograms are simply 1D probability density distributions for each of the parameters on the abscissa. The dotted line at γ₁ or γ₂ values of 0.6 is shown for reference.