condition mean min max ZT0-3 2283.85 2283.85 2283.85 ZT4-7 2764.3 2764.3 2764.3 ZT8-11 2586.2 2586.2 2586.2 ZT12-15 2509.85 2509.85 2509.85 ZT16-19 2385.45 2385.45 2385.45 ZT20-23 2276.6 2276.6 2276.6