[ {"step": 1, "reward": -0.5}, {"step": 10, "reward": -0.2}, {"step": 20, "reward": 0.1}, {"step": 50, "reward": 0.4}, {"step": 100, "reward": 0.75}, {"step": 150, "reward": 1.1}, {"step": 200, "reward": 1.45}, {"step": 250, "reward": 1.6}, {"step": 300, "reward": 1.82} ]