condition mean min max ZT0-3 0.7075165 0.359983 1.05505 ZT4-7 0.326467 0.326467 0.326467 ZT8-11 0.120332 0.120332 0.120332 ZT12-15 0 0 0 ZT16-19 0.399123 0.399123 0.399123 ZT20-23 0.8415445 0.8415445 0.8415445