condition mean min max ZT0-3 35.25 35.25 35.25 ZT4-7 18.7 18.7 18.7 ZT8-11 22.55 22.55 22.55 ZT12-15 43.650000000000006 43.650000000000006 43.650000000000006 ZT16-19 53.8 53.8 53.8 ZT20-23 43.9 43.9 43.9