condition mean min max ZT0-3 853.75 853.75 853.75 ZT4-7 697.1 697.1 697.1 ZT8-11 668.65 668.65 668.65 ZT12-15 615.25 615.25 615.25 ZT16-19 585.1500000000001 585.1500000000001 585.1500000000001 ZT20-23 800.45 800.45 800.45