condition mean min max ZT0-3 14.22153 14.22153 14.22153 ZT4-7 11.4695155 11.4695155 11.4695155 ZT8-11 12.875011 12.875011 12.875011 ZT12-15 14.6909695 14.6909695 14.6909695 ZT16-19 11.042482 11.042482 11.042482 ZT20-23 11.7526165 11.7526165 11.7526165