condition mean min max ZT0-3 95.9395757575 90.095124415 101.78402709999999 ZT4-7 13.175691753999999 7.7632073550000005 18.588176153 ZT8-11 18.54706581125 11.6615496175 25.432582005 ZT12-15 21.824087517499997 21.714765739999997 21.933409294999997 ZT16-19 27.241386235 24.792375825 29.690396645 ZT20-23 41.787493229999995 41.44960696 42.1253795