condition mean min max ZT0-3 53.05255 53.05255 53.05255 ZT4-7 32.6994 32.6994 32.6994 ZT8-11 28.344900000000003 28.344900000000003 28.344900000000003 ZT12-15 27.4548 27.4548 27.4548 ZT16-19 45.9541 45.9541 45.9541 ZT20-23 44.957300000000004 44.957300000000004 44.957300000000004