condition mean min max ZT0-3 2491.8 2491.8 2491.8 ZT4-7 2363.8 2363.8 2363.8 ZT8-11 2425.2 2425.2 2425.2 ZT12-15 3077.9 3077.9 3077.9 ZT16-19 2715.55 2715.55 2715.55 ZT20-23 2394.55 2394.55 2394.55