condition mean min max ZT0-3 2567.5 2567.5 2567.5 ZT4-7 2723.5 2723.5 2723.5 ZT8-11 2537.0 2537.0 2537.0 ZT12-15 2445.9 2445.9 2445.9 ZT16-19 2619.75 2619.75 2619.75 ZT20-23 2752.3 2752.3 2752.3