condition mean min max ZT0-3 0.36994475 0.3171625 0.42272699999999996 ZT4-7 1.607063 1.607063 1.607063 ZT8-11 1.4851964500000001 1.4851964500000001 1.4851964500000001 ZT12-15 0 0 0 ZT16-19 1.04946 1.04946 1.04946 ZT20-23 1.9236399999999998 1.9236399999999998 1.9236399999999998