condition mean min max ZT0-3 1.4508075 1.2851 1.6165150000000001 ZT4-7 2.50358 2.50358 2.50358 ZT8-11 1.9235700000000002 1.9235700000000002 1.9235700000000002 ZT12-15 0 0 0 ZT16-19 4.28377 4.28377 4.28377 ZT20-23 4.5146049999999995 4.5146049999999995 4.5146049999999995