condition mean min max ZT0-3 169.264195 169.264195 169.264195 ZT4-7 118.38165550000001 118.38165550000001 118.38165550000001 ZT8-11 53.8389265 53.8389265 53.8389265 ZT12-15 101.96904950000001 101.96904950000001 101.96904950000001 ZT16-19 23.7247345 23.7247345 23.7247345 ZT20-23 41.565873 41.565873 41.565873