condition mean min max ZT0-3 12.782399999999999 12.275549999999999 13.28925 ZT4-7 10.396854999999999 10.396854999999999 10.396854999999999 ZT8-11 10.62285 10.62285 10.62285 ZT12-15 0 0 0 ZT16-19 11.80422 11.80422 11.80422 ZT20-23 11.83635 11.83635 11.83635