[ { "max_n": 10, "c_range": [ 3, 10 ], "d_ratio": 0.3 }, { "max_n": 15, "c_range": [ 10, 30 ], "d_ratio": 0.6 }, { "max_n": 25, "c_range": [ 8, 25 ], "d_ratio": 0.4 } ]