condition mean min max ZT0-3 924.0 924.0 924.0 ZT4-7 677.0 677.0 677.0 ZT8-11 731.45 731.45 731.45 ZT12-15 782.3 782.3 782.3 ZT16-19 944.35 944.35 944.35 ZT20-23 1024.25 1024.25 1024.25