condition mean min max ZT0-3 97.108016 97.108016 97.108016 ZT4-7 66.628288 66.628288 66.628288 ZT8-11 62.009676 62.009676 62.009676 ZT12-15 87.02337399999999 87.02337399999999 87.02337399999999 ZT16-19 84.1070015 84.1070015 84.1070015 ZT20-23 95.1311005 95.1311005 95.1311005