condition mean min max ZT0-3 205.831493825 172.9438176 238.71917005 ZT4-7 198.825935975 184.22102379999998 213.43084815000003 ZT8-11 326.99983425000005 273.08135675 380.91831175000004 ZT12-15 572.979628625 515.46360765 630.4956496 ZT16-19 314.65645844999995 248.84366104999998 380.46925584999997 ZT20-23 163.74332865000002 128.79149030000002 198.695167