condition mean min max ZT0-3 4165.9 4165.9 4165.9 ZT4-7 2214.9 2214.9 2214.9 ZT8-11 2121.45 2121.45 2121.45 ZT12-15 2546.5 2546.5 2546.5 ZT16-19 3503.1 3503.1 3503.1 ZT20-23 3753.85 3753.85 3753.85