condition mean min max ZT0-3 762.0999999999999 762.0999999999999 762.0999999999999 ZT4-7 678.3 678.3 678.3 ZT8-11 617.55 617.55 617.55 ZT12-15 329.15 329.15 329.15 ZT16-19 325.15 325.15 325.15 ZT20-23 515.55 515.55 515.55