condition mean min max ZT0-3 63.996399999999994 61.8185 66.17429999999999 ZT4-7 22.604300000000002 22.604300000000002 22.604300000000002 ZT8-11 12.9199 12.9199 12.9199 ZT12-15 0 0 0 ZT16-19 43.685649999999995 43.685649999999995 43.685649999999995 ZT20-23 86.41820000000001 86.41820000000001 86.41820000000001