condition mean min max ZT0-3 0.5512414999999999 0.5512414999999999 0.5512414999999999 ZT4-7 0.2715695 0.2715695 0.2715695 ZT8-11 0.1602405 0.1602405 0.1602405 ZT12-15 0.5340134999999999 0.5340134999999999 0.5340134999999999 ZT16-19 0.5288635 0.5288635 0.5288635 ZT20-23 0.497676 0.497676 0.497676