condition mean min max ZT0-3 113.8 113.8 113.8 ZT4-7 180.5 180.5 180.5 ZT8-11 144.45 144.45 144.45 ZT12-15 196.60000000000002 196.60000000000002 196.60000000000002 ZT16-19 156.9 156.9 156.9 ZT20-23 138.10000000000002 138.10000000000002 138.10000000000002