condition mean min max ZT0-3 0.71433075 0.6070329999999999 0.8216285 ZT4-7 1.43499 1.43499 1.43499 ZT8-11 1.4418 1.4418 1.4418 ZT12-15 0 0 0 ZT16-19 1.81799 1.81799 1.81799 ZT20-23 1.368995 1.368995 1.368995