condition mean min max ZT0-3 0.18486045300000004 0.15081324000000002 0.21890766600000003 ZT4-7 0.10426133025 0.0912644765 0.11725818400000002 ZT8-11 1.18571033375 0.187075585 2.1843450824999997 ZT12-15 4.4848496395 3.2959386175 5.6737606615 ZT16-19 4.5889097825 4.1462438465 5.0315757185 ZT20-23 3.12899843975 2.117809484 4.1401873955