condition mean min max ZT0-3 427.25 427.25 427.25 ZT4-7 684.9 684.9 684.9 ZT8-11 510.29999999999995 510.29999999999995 510.29999999999995 ZT12-15 508.25 508.25 508.25 ZT16-19 436.05 436.05 436.05 ZT20-23 402.15 402.15 402.15