condition mean min max ZT0-3 3724.4500000000003 3724.4500000000003 3724.4500000000003 ZT4-7 4926.3 4926.3 4926.3 ZT8-11 4735.700000000001 4735.700000000001 4735.700000000001 ZT12-15 5549.75 5549.75 5549.75 ZT16-19 5628.15 5628.15 5628.15 ZT20-23 4664.75 4664.75 4664.75