condition mean min max ZT0-3 578.45 578.45 578.45 ZT4-7 157.0 157.0 157.0 ZT8-11 392.6 392.6 392.6 ZT12-15 480.7 480.7 480.7 ZT16-19 705.1999999999999 705.1999999999999 705.1999999999999 ZT20-23 456.5 456.5 456.5