condition mean min max ZT0-3 123.9 123.9 123.9 ZT4-7 58.2 58.2 58.2 ZT8-11 102.6 102.6 102.6 ZT12-15 121.8 121.8 121.8 ZT16-19 172.85000000000002 172.85000000000002 172.85000000000002 ZT20-23 173.85 173.85 173.85