condition mean min max ZT0-3 0.20595 0.20595 0.20595 ZT4-7 0.12777149999999998 0.12777149999999998 0.12777149999999998 ZT8-11 0.373474 0.373474 0.373474 ZT12-15 0.306293 0.306293 0.306293 ZT16-19 0.6137589999999999 0.6137589999999999 0.6137589999999999 ZT20-23 0.138249 0.138249 0.138249