condition mean min max ZT0-3 0.8483722499999999 0.7603504999999999 0.936394 ZT4-7 0.9780789999999999 0.9780789999999999 0.9780789999999999 ZT8-11 1.66276 1.66276 1.66276 ZT12-15 0 0 0 ZT16-19 2.135855 2.135855 2.135855 ZT20-23 1.4472450000000001 1.4472450000000001 1.4472450000000001