condition mean min max ZT0-3 0.6101745000000001 0.4152485 0.8051005 ZT4-7 0.586918 0.586918 0.586918 ZT8-11 0.295491 0.295491 0.295491 ZT12-15 0 0 0 ZT16-19 1.0004405 1.0004405 1.0004405 ZT20-23 0.8805085 0.8805085 0.8805085