condition mean min max ZT0-3 44.37278123749999 39.66895005 49.07661242499999 ZT4-7 71.6892620825 51.8943387 91.484185465 ZT8-11 150.88654973500002 126.50433307 175.2687664 ZT12-15 65.371457195 21.540918220000002 109.20199617 ZT16-19 18.998992125 18.3768519 19.62113235 ZT20-23 19.70957254 19.667127395 19.752017685