condition mean min max ZT0-3 0.06293938333333332 0.0 0.13933684999999998 ZT4-7 0.086404 0.086404 0.086404 ZT8-11 0.36395475 0.36395475 0.36395475 ZT12-15 0.3683865 0.288078 0.448695 ZT16-19 0.0439623 0.0439623 0.0439623 ZT20-23 0.0 0.0 0.0