condition mean min max ZT0-3 0.47239299999999995 0.47239299999999995 0.47239299999999995 ZT4-7 0.4612725 0.4612725 0.4612725 ZT8-11 0.08948724999999999 0.08948724999999999 0.08948724999999999 ZT12-15 0.03272915 0.03272915 0.03272915 ZT16-19 0.5203 0.5203 0.5203 ZT20-23 0.8993614999999999 0.8993614999999999 0.8993614999999999