condition mean min max ZT0-3 67.61831083 63.90761865 71.32900301 ZT4-7 64.2191319825 53.174815030000005 75.263448935 ZT8-11 115.7198107425 91.495482135 139.94413935 ZT12-15 94.569430325 67.89557823 121.24328242 ZT16-19 53.7051707 53.367625925 54.042715475 ZT20-23 52.270543755000006 49.22917021 55.311917300000005