Figure 2. 1900 cohort Swedish mortality data fitted by the model of heterogeneous population composed of six subpopulations (panel A) and the Heligman-Pollard model (panel B). The dots represent the observed central death rates, while the dashed curves in panel (A) indicate the exponential mortality dynamics of each subpopulation in the model of heterogeneous population and in panel (B) - the dynamics of the three components of the Heligman-Pollard model. Note that the plots are given in semi-logarithmic scale.