condition mean min max ZT0-3 0.68998375 0.6185674999999999 0.7614000000000001 ZT4-7 1.39138 1.39138 1.39138 ZT8-11 2.275785 2.275785 2.275785 ZT12-15 0 0 0 ZT16-19 1.82491 1.82491 1.82491 ZT20-23 1.119739 1.119739 1.119739