condition mean min max ZT0-3 269.89300000000003 269.89300000000003 269.89300000000003 ZT4-7 256.947 256.947 256.947 ZT8-11 138.893 138.893 138.893 ZT12-15 153.1173 153.1173 153.1173 ZT16-19 227.09799999999998 227.09799999999998 227.09799999999998 ZT20-23 245.484 245.484 245.484