condition mean min max ZT0-3 3011.7 3011.7 3011.7 ZT4-7 3087.4 3087.4 3087.4 ZT8-11 2392.9 2392.9 2392.9 ZT12-15 1970.7 1970.7 1970.7 ZT16-19 2059.15 2059.15 2059.15 ZT20-23 2320.5 2320.5 2320.5