{
 "task": "DualArmMahjongSetup-v1",
 "level": "level_4",
 "step": 5000,
 "success_rate": 0.02,
 "successes": 1,
 "episodes": 50,
 "episode_seeds": "1000-1049",
 "return_mean": NaN,
 "ckpts_evaluated": 8,
 "note": "best of all evaluated checkpoints; ties broken by earliest step"
}