For deme L, the population count was 9084 until a change 8348.41 generations ago, where it reduced to 8598, remaining steady thereafter.
time_units: generations
demes:
  - name: L
    start_time: .inf
    epochs:
      - start_size: 9084
        end_time: 8348.41
      - start_size: 8598
        end_time: 0