condition mean min max ZT0-3 32.464150000000004 32.464150000000004 32.464150000000004 ZT4-7 28.6604 28.6604 28.6604 ZT8-11 21.49695 21.49695 21.49695 ZT12-15 21.5709 21.5709 21.5709 ZT16-19 31.7651 31.7651 31.7651 ZT20-23 31.8219 31.8219 31.8219