condition mean min max ZT0-3 593.75 593.75 593.75 ZT4-7 214.6 214.6 214.6 ZT8-11 563.5500000000001 563.5500000000001 563.5500000000001 ZT12-15 470.25 470.25 470.25 ZT16-19 520.45 520.45 520.45 ZT20-23 529.4 529.4 529.4