condition mean min max ZT0-3 63.834050000000005 63.834050000000005 63.834050000000005 ZT4-7 80.41839999999999 80.41839999999999 80.41839999999999 ZT8-11 44.608 44.608 44.608 ZT12-15 20.240000000000002 20.240000000000002 20.240000000000002 ZT16-19 18.67595 18.67595 18.67595 ZT20-23 43.6515 43.6515 43.6515