condition mean min max ZT0-3 13.698599999999999 13.698599999999999 13.698599999999999 ZT4-7 14.3139 14.3139 14.3139 ZT8-11 10.754850000000001 10.754850000000001 10.754850000000001 ZT12-15 11.926 11.926 11.926 ZT16-19 13.2844 13.2844 13.2844 ZT20-23 10.132539999999999 10.132539999999999 10.132539999999999