condition mean min max ZT0-3 0.59035875 0.562867 0.6178505 ZT4-7 0.757471 0.757471 0.757471 ZT8-11 1.56432 1.56432 1.56432 ZT12-15 0 0 0 ZT16-19 1.30929 1.30929 1.30929 ZT20-23 1.062514 1.062514 1.062514