condition mean min max ZT0-3 337.04999999999995 337.04999999999995 337.04999999999995 ZT4-7 452.4 452.4 452.4 ZT8-11 314.05 314.05 314.05 ZT12-15 342.45000000000005 342.45000000000005 342.45000000000005 ZT16-19 376.0 376.0 376.0 ZT20-23 381.6 381.6 381.6