condition mean min max ZT0-3 0.33444699825 0.22006057 0.4488334265 ZT4-7 0.33700735725 0.2831083155 0.390906399 ZT8-11 0.87408259125 0.153661504 1.5945036785 ZT12-15 8.1119511805 7.133378657 9.090523704 ZT16-19 10.657630408 10.609988408 10.705272407999999 ZT20-23 12.3593868075 10.695126644999998 14.023646970000001