condition mean min max ZT0-3 195.8685 161.30349999999999 218.622 ZT4-7 160.7525 160.7525 160.7525 ZT8-11 184.5625 184.5625 184.5625 ZT12-15 246.038 244.00400000000002 248.072 ZT16-19 230.6935 230.6935 230.6935 ZT20-23 218.75 218.75 218.75