condition mean min max ZT0-3 67.118242705 39.92475946 94.31172595000001 ZT4-7 77.65566106 65.911793325 89.39952879500001 ZT8-11 66.7354474675 61.305055120000006 72.165839815 ZT12-15 70.602420535 65.137011915 76.067829155 ZT16-19 85.826520225 83.04390597 88.60913448 ZT20-23 81.69849185000001 66.951985865 96.44499783500001