Deme L had an initial size of 3513 until 1670.648 generations ago. At that time, its population size changed to 8037, and has remained there till current time.
time_units: generations
demes:
  - name: L
    start_time: .inf
    epochs:
      - start_size: 3513
        end_time: 1670.648
      - start_size: 8037
        end_time: 0