condition mean min max ZT0-3 381.355027 381.355027 381.355027 ZT4-7 475.45840899999996 475.45840899999996 475.45840899999996 ZT8-11 443.156924 443.156924 443.156924 ZT12-15 394.157071 394.157071 394.157071 ZT16-19 347.8227905 347.8227905 347.8227905 ZT20-23 421.6310905 421.6310905 421.6310905