condition mean min max ZT0-3 5.08483543675 2.480682788 7.6889880855 ZT4-7 27.04072339175 14.488117603500001 39.59332918 ZT8-11 108.91434361750001 73.09894229999999 144.729744935 ZT12-15 116.63181510999999 93.64605681999998 139.6175734 ZT16-19 46.4710594975 34.480542585 58.46157641 ZT20-23 16.7867118 15.703201885000002 17.870221715