condition mean min max ZT0-3 41.97188955 36.51710986 47.426669239999995 ZT4-7 63.4703298725 54.817760185 72.12289956000001 ZT8-11 225.0378075525 109.177204355 340.89841075 ZT12-15 678.60071855 644.12210575 713.0793313500001 ZT16-19 375.702918975 278.74257625 472.6632617 ZT20-23 108.558224675 76.8233329 140.29311645