condition mean min max ZT0-3 729.80524 729.80524 729.80524 ZT4-7 609.84845 609.84845 609.84845 ZT8-11 643.966005 643.966005 643.966005 ZT12-15 660.9831165 660.9831165 660.9831165 ZT16-19 736.1484399999999 736.1484399999999 736.1484399999999 ZT20-23 848.579296 848.579296 848.579296