condition mean min max ZT0-3 1343.593089 1343.593089 1343.593089 ZT4-7 1912.1344745000001 1912.1344745000001 1912.1344745000001 ZT8-11 1952.988794 1952.988794 1952.988794 ZT12-15 2039.857786 2039.857786 2039.857786 ZT16-19 2207.9940395 2207.9940395 2207.9940395 ZT20-23 1853.4218489999998 1853.4218489999998 1853.4218489999998