condition mean min max ZT0-3 13.862950000000001 13.862950000000001 13.862950000000001 ZT4-7 22.82225 22.82225 22.82225 ZT8-11 6.06466 6.06466 6.06466 ZT12-15 3.950505 3.950505 3.950505 ZT16-19 5.942285 5.942285 5.942285 ZT20-23 12.76225 12.76225 12.76225