condition mean min max ZT0-3 0.17569265 0.0491883 0.302197 ZT4-7 0.9598315000000001 0.9598315000000001 0.9598315000000001 ZT8-11 1.11032 1.11032 1.11032 ZT12-15 0 0 0 ZT16-19 0.494904 0.494904 0.494904 ZT20-23 0.24962014999999999 0.24962014999999999 0.24962014999999999