condition mean min max ZT0-3 165.45 165.45 165.45 ZT4-7 199.2 199.2 199.2 ZT8-11 207.64999999999998 207.64999999999998 207.64999999999998 ZT12-15 196.75 196.75 196.75 ZT16-19 234.85 234.85 234.85 ZT20-23 185.2 185.2 185.2