condition mean min max ZT0-3 1888.3 1888.3 1888.3 ZT4-7 886.3 886.3 886.3 ZT8-11 1691.8000000000002 1691.8000000000002 1691.8000000000002 ZT12-15 3090.25 3090.25 3090.25 ZT16-19 3648.75 3648.75 3648.75 ZT20-23 3531.1 3531.1 3531.1