lambda1
lambda2
lambda3
lambda4
 800,000/(70*365)
3,110,000/(70*365)
6,400,000/(70*365)
1,600,000/(70*365)
 Considering a population in equilibrium, the rate of birth has to equal the rate of death, so we calculated the rate of birth as a function of the initial rate of recruitment in the population of each subgroup, divided by the natural rate of death of the population.
