condition mean min max ZT0-3 157.75 157.75 157.75 ZT4-7 173.7 173.7 173.7 ZT8-11 185.65 185.65 185.65 ZT12-15 198.45 198.45 198.45 ZT16-19 172.1 172.1 172.1 ZT20-23 198.8 198.8 198.8