condition mean min max ZT0-3 43.61886 43.61886 43.61886 ZT4-7 43.982788 43.982788 43.982788 ZT8-11 45.4916855 45.4916855 45.4916855 ZT12-15 31.548257 31.548257 31.548257 ZT16-19 42.170716999999996 42.170716999999996 42.170716999999996 ZT20-23 61.192125 61.192125 61.192125