condition mean min max ZT0-3 4479.450000000001 4479.450000000001 4479.450000000001 ZT4-7 5266.6 5266.6 5266.6 ZT8-11 4692.0 4692.0 4692.0 ZT12-15 4248.5 4248.5 4248.5 ZT16-19 3815.25 3815.25 3815.25 ZT20-23 3587.35 3587.35 3587.35