Question about calibration.json

thank you for your work i've read the json clibration file but i don't know how to retrieve the environment space cords.
    "Space": {
        "MaxU": 2860,
        "MinU": -4200,
        "MaxV": 3180,
        "MinV": -2960,
        "MaxW": 2100,
        "MinW": 100,
        "VoxelSizeInMM": 20
    }