condition mean min max ZT0-3 1213.85 1213.85 1213.85 ZT4-7 736.8 736.8 736.8 ZT8-11 827.3499999999999 827.3499999999999 827.3499999999999 ZT12-15 753.4 753.4 753.4 ZT16-19 802.25 802.25 802.25 ZT20-23 946.95 946.95 946.95