Initially, the population size of deme P stood at 1579, but this changed 7876.2052 generations ago when it increased to 1803, and it has been stable at that size up to today.
time_units: generations
demes:
  - name: P
    start_time: .inf
    epochs:
      - start_size: 1579
        end_time: 7876.2052
      - start_size: 1803
        end_time: 0