condition mean min max ZT0-3 11996.55 11996.55 11996.55 ZT4-7 17643.4 17643.4 17643.4 ZT8-11 19511.75 19511.75 19511.75 ZT12-15 16027.5 16027.5 16027.5 ZT16-19 11041.2 11041.2 11041.2 ZT20-23 9089.0 9089.0 9089.0