condition mean min max ZT0-3 0.6217824999999999 0.6217824999999999 0.6217824999999999 ZT4-7 0.6994165 0.6994165 0.6994165 ZT8-11 0.5318885 0.5318885 0.5318885 ZT12-15 0.5615055 0.5615055 0.5615055 ZT16-19 0.754223 0.754223 0.754223 ZT20-23 0.5450225 0.5450225 0.5450225