condition mean min max ZT0-3 0.10291302499999999 0.0 0.20582604999999998 ZT4-7 1.62158383725 0.8256623565 2.417505318 ZT8-11 1.373826253 0.856283924 1.8913685820000001 ZT12-15 1.27743971875 0.9471703284999999 1.607709109 ZT16-19 1.7899568009999998 1.2246735005 2.3552401014999997 ZT20-23 6.385573236 4.379814854499999 8.3913316175