{
  "cr": [
    { "id": "00", "grp": "cr", "class": 1, "rating": "E", "cost": 1000,     "capacity": 2 },
    { "id": "01", "grp": "cr", "class": 2, "rating": "E", "cost": 3250,     "capacity": 4 },
    { "id": "02", "grp": "cr", "class": 3, "rating": "E", "cost": 10560,    "capacity": 8 },
    { "id": "03", "grp": "cr", "class": 4, "rating": "E", "cost": 34330,    "capacity": 16 },
    { "id": "04", "grp": "cr", "class": 5, "rating": "E", "cost": 111570,   "capacity": 32 },
    { "id": "05", "grp": "cr", "class": 6, "rating": "E", "cost": 362590,   "capacity": 64 },
    { "id": "06", "grp": "cr", "class": 7, "rating": "E", "cost": 1178420,  "capacity": 128 },
    { "id": "07", "grp": "cr", "class": 8, "rating": "E", "cost": 3829870,  "capacity": 256 }
  ]
}