condition mean min max ZT0-3 574.75 574.75 574.75 ZT4-7 720.8 720.8 720.8 ZT8-11 559.9000000000001 559.9000000000001 559.9000000000001 ZT12-15 518.75 518.75 518.75 ZT16-19 633.25 633.25 633.25 ZT20-23 591.55 591.55 591.55