condition mean min max ZT0-3 2565.75 2565.75 2565.75 ZT4-7 2547.6 2547.6 2547.6 ZT8-11 2347.2 2347.2 2347.2 ZT12-15 2066.45 2066.45 2066.45 ZT16-19 2107.3 2107.3 2107.3 ZT20-23 2305.55 2305.55 2305.55