condition mean min max ZT0-3 301.88300000000004 301.88300000000004 301.88300000000004 ZT4-7 252.598 252.598 252.598 ZT8-11 271.0745 271.0745 271.0745 ZT12-15 228.4845 228.4845 228.4845 ZT16-19 362.9115 362.9115 362.9115 ZT20-23 306.911 306.911 306.911