condition mean min max ZT0-3 12.43155 12.43155 12.43155 ZT4-7 10.852 10.852 10.852 ZT8-11 8.484895 8.484895 8.484895 ZT12-15 10.18701 10.18701 10.18701 ZT16-19 14.92385 14.92385 14.92385 ZT20-23 11.105975 11.105975 11.105975