condition mean min max ZT0-3 96.55 96.55 96.55 ZT4-7 211.3 211.3 211.3 ZT8-11 262.95000000000005 262.95000000000005 262.95000000000005 ZT12-15 247.8 247.8 247.8 ZT16-19 174.8 174.8 174.8 ZT20-23 102.65 102.65 102.65