condition mean min max ZT0-3 1.014656 0.659356 1.2116449999999999 ZT4-7 0.7524755000000001 0.7524755000000001 0.7524755000000001 ZT8-11 0.9213165000000001 0.9213165000000001 0.9213165000000001 ZT12-15 1.6681050000000002 1.42146 1.9147500000000002 ZT16-19 1.8877899999999999 1.8877899999999999 1.8877899999999999 ZT20-23 2.17153 2.17153 2.17153