condition mean min max ZT0-3 0.35181055 0.35181055 0.35181055 ZT4-7 0.48016000000000003 0.48016000000000003 0.48016000000000003 ZT8-11 0.3260305 0.3260305 0.3260305 ZT12-15 0.21779099999999998 0.21779099999999998 0.21779099999999998 ZT16-19 0.262066 0.262066 0.262066 ZT20-23 0.285422 0.285422 0.285422