condition mean min max ZT0-3 569.4 569.4 569.4 ZT4-7 333.7 333.7 333.7 ZT8-11 382.45000000000005 382.45000000000005 382.45000000000005 ZT12-15 478.0 478.0 478.0 ZT16-19 783.65 783.65 783.65 ZT20-23 763.55 763.55 763.55