condition mean min max ZT0-3 44.3998 44.3998 44.3998 ZT4-7 72.6488 72.6488 72.6488 ZT8-11 47.3904 47.3904 47.3904 ZT12-15 34.79395 34.79395 34.79395 ZT16-19 26.8611 26.8611 26.8611 ZT20-23 29.17645 29.17645 29.17645