condition mean min max ZT0-3 370.242003 370.242003 370.242003 ZT4-7 336.3901535 336.3901535 336.3901535 ZT8-11 270.973886 270.973886 270.973886 ZT12-15 324.4896275 324.4896275 324.4896275 ZT16-19 410.8983425 410.8983425 410.8983425 ZT20-23 512.0528005 512.0528005 512.0528005