condition mean min max ZT0-3 1561.8 1561.8 1561.8 ZT4-7 2082.7 2082.7 2082.7 ZT8-11 1897.05 1897.05 1897.05 ZT12-15 2043.3500000000001 2043.3500000000001 2043.3500000000001 ZT16-19 2152.15 2152.15 2152.15 ZT20-23 1709.0 1709.0 1709.0