condition mean min max ZT0-3 4699.25 4699.25 4699.25 ZT4-7 4467.7 4467.7 4467.7 ZT8-11 3618.25 3618.25 3618.25 ZT12-15 4692.950000000001 4692.950000000001 4692.950000000001 ZT16-19 4589.5 4589.5 4589.5 ZT20-23 4649.55 4649.55 4649.55