condition mean min max ZT0-3 216.519 216.519 216.519 ZT4-7 196.9265 196.9265 196.9265 ZT8-11 82.11099999999999 82.11099999999999 82.11099999999999 ZT12-15 100.80225 100.80225 100.80225 ZT16-19 124.96799999999999 124.96799999999999 124.96799999999999 ZT20-23 140.977 140.977 140.977