condition mean min max ZT0-3 333.82328 333.82328 333.82328 ZT4-7 317.51443 317.51443 317.51443 ZT8-11 309.428163 309.428163 309.428163 ZT12-15 316.18694100000005 316.18694100000005 316.18694100000005 ZT16-19 322.8316845 322.8316845 322.8316845 ZT20-23 347.1783145 347.1783145 347.1783145