condition mean min max ZT0-3 7574.15 7574.15 7574.15 ZT4-7 7136.5 7136.5 7136.5 ZT8-11 8300.599999999999 8300.599999999999 8300.599999999999 ZT12-15 8478.3 8478.3 8478.3 ZT16-19 8213.95 8213.95 8213.95 ZT20-23 7755.7 7755.7 7755.7