condition mean min max ZT0-3 112.48877499999999 108.28049999999999 116.69704999999999 ZT4-7 42.73315 42.73315 42.73315 ZT8-11 17.59425 17.59425 17.59425 ZT12-15 0 0 0 ZT16-19 14.619720000000001 14.619720000000001 14.619720000000001 ZT20-23 27.4771 27.4771 27.4771