condition mean min max ZT0-3 4141.9 4141.9 4141.9 ZT4-7 4084.8 4084.8 4084.8 ZT8-11 3916.25 3916.25 3916.25 ZT12-15 4435.1 4435.1 4435.1 ZT16-19 4375.2 4375.2 4375.2 ZT20-23 4248.05 4248.05 4248.05