condition mean min max ZT0-3 1.26213 1.165555 1.358705 ZT4-7 1.517015 1.517015 1.517015 ZT8-11 0.9526075 0.9526075 0.9526075 ZT12-15 0 0 0 ZT16-19 1.44329 1.44329 1.44329 ZT20-23 1.094135 1.094135 1.094135