condition mean min max ZT0-3 0.2714816 0.12593625 0.4042845 ZT4-7 0.0830695 0.0830695 0.0830695 ZT8-11 0.2658715 0.2658715 0.2658715 ZT12-15 0.8014325 0.7927875 0.8100775 ZT16-19 0.5812934999999999 0.5812934999999999 0.5812934999999999 ZT20-23 0.6936869999999999 0.6936869999999999 0.6936869999999999