condition mean min max ZT0-3 317.3 317.3 317.3 ZT4-7 309.5 309.5 309.5 ZT8-11 401.4 401.4 401.4 ZT12-15 411.45000000000005 411.45000000000005 411.45000000000005 ZT16-19 443.45 443.45 443.45 ZT20-23 357.6 357.6 357.6