condition mean min max ZT0-3 51.2027 48.555800000000005 53.849599999999995 ZT4-7 44.1925 44.1925 44.1925 ZT8-11 55.55625 55.55625 55.55625 ZT12-15 0 0 0 ZT16-19 110.7416 110.7416 110.7416 ZT20-23 71.27690000000001 71.27690000000001 71.27690000000001