Table 1. Parameters of the models that best fit the data.

The value of the other parameters were held fixed at: μ₀ = 550, β = 0.485/365. The R² column shows the R² value calculated over the age range 55 to 99.

Birth year	Sex	λ	θ	R2
1885	W	498.1	96.1	0.997
1905	W	498.1	107.3	0.995
1885	M	499.0	95.5	0.998
1905	M	498.9	96.7	0.996