condition mean min max ZT0-3 76.15275 76.15275 76.15275 ZT4-7 59.608000000000004 59.608000000000004 59.608000000000004 ZT8-11 37.7318 37.7318 37.7318 ZT12-15 45.43685 45.43685 45.43685 ZT16-19 56.4936 56.4936 56.4936 ZT20-23 78.61125 78.61125 78.61125