condition mean min max ZT0-3 585.2 585.2 585.2 ZT4-7 373.7 373.7 373.7 ZT8-11 347.95 347.95 347.95 ZT12-15 337.20000000000005 337.20000000000005 337.20000000000005 ZT16-19 342.95 342.95 342.95 ZT20-23 463.6 463.6 463.6