condition mean min max ZT0-3 72.09248333333333 53.41945 83.84875 ZT4-7 37.2465 37.2465 37.2465 ZT8-11 41.0357 41.0357 41.0357 ZT12-15 50.7422 47.76265 53.72175 ZT16-19 68.63034999999999 68.63034999999999 68.63034999999999 ZT20-23 90.87835000000001 90.87835000000001 90.87835000000001