condition mean min max ZT0-3 3981.9 3981.9 3981.9 ZT4-7 2321.3 2321.3 2321.3 ZT8-11 1445.25 1445.25 1445.25 ZT12-15 356.65000000000003 356.65000000000003 356.65000000000003 ZT16-19 318.35 318.35 318.35 ZT20-23 955.5999999999999 955.5999999999999 955.5999999999999