Deme T maintained a population of 2256 until there was a shift 9771.8963 generations ago that changed its numbers to 7526, a figure that has remained the same since.
time_units: generations
demes:
  - name: T
    start_time: .inf
    epochs:
      - start_size: 2256
        end_time: 9771.8963
      - start_size: 7526
        end_time: 0