condition mean min max ZT0-3 8437.3 8437.3 8437.3 ZT4-7 4579.4 4579.4 4579.4 ZT8-11 3891.55 3891.55 3891.55 ZT12-15 4799.8 4799.8 4799.8 ZT16-19 6445.8 6445.8 6445.8 ZT20-23 5567.7 5567.7 5567.7