condition mean min max ZT0-3 246.45 246.45 246.45 ZT4-7 241.3 241.3 241.3 ZT8-11 252.05 252.05 252.05 ZT12-15 402.04999999999995 402.04999999999995 402.04999999999995 ZT16-19 387.1 387.1 387.1 ZT20-23 335.95 335.95 335.95