condition mean min max ZT0-3 267.25 267.25 267.25 ZT4-7 358.4 358.4 358.4 ZT8-11 290.75 290.75 290.75 ZT12-15 470.65 470.65 470.65 ZT16-19 340.1 340.1 340.1 ZT20-23 275.65 275.65 275.65