condition mean min max ZT0-3 61.1032 47.63505 75.4944 ZT4-7 24.649900000000002 24.649900000000002 24.649900000000002 ZT8-11 18.5779 18.5779 18.5779 ZT12-15 43.631575 36.764399999999995 50.49875 ZT16-19 35.85685 35.85685 35.85685 ZT20-23 63.4597 63.4597 63.4597