book_rag_server/conf/age_level.json

{
    "L1": [0, 1 ,2],
    "L2": [2, 3],
    "L3": [3, 4],
    "L4": [4, 5],
    "L5": [5, 6],
    "L6": [6, 7, 8, 9, 10],
    "L7": [10, 11, 12, 13, 14],
    "L8": [14, 15, 16, 17, 18, 19, 20]
}