condition mean min max ZT0-3 0.1446155 0.1446155 0.1446155 ZT4-7 0.3003485 0.3003485 0.3003485 ZT8-11 0.27227 0.27227 0.27227 ZT12-15 0.3983205 0.3983205 0.3983205 ZT16-19 0.8754095000000001 0.8754095000000001 0.8754095000000001 ZT20-23 0.5647175 0.5647175 0.5647175