condition mean min max ZT0-3 165.6 165.6 165.6 ZT4-7 118.8 118.8 118.8 ZT8-11 181.25 181.25 181.25 ZT12-15 275.6 275.6 275.6 ZT16-19 262.85 262.85 262.85 ZT20-23 223.45000000000002 223.45000000000002 223.45000000000002