condition mean min max ZT0-3 764.3499999999999 764.3499999999999 764.3499999999999 ZT4-7 457.2 457.2 457.2 ZT8-11 375.0 375.0 375.0 ZT12-15 300.95000000000005 300.95000000000005 300.95000000000005 ZT16-19 628.3 628.3 628.3 ZT20-23 788.7 788.7 788.7