condition mean min max ZT0-3 0.40073925 0.355464 0.4460145 ZT4-7 1.590646 1.590646 1.590646 ZT8-11 0.863357 0.863357 0.863357 ZT12-15 0 0 0 ZT16-19 0.648673 0.648673 0.648673 ZT20-23 1.0038645 1.0038645 1.0038645