condition mean min max ZT0-3 99.095634 99.095634 99.095634 ZT4-7 124.30800199999999 124.30800199999999 124.30800199999999 ZT8-11 127.26651150000001 127.26651150000001 127.26651150000001 ZT12-15 101.390215 101.390215 101.390215 ZT16-19 138.000011 138.000011 138.000011 ZT20-23 137.8860775 137.8860775 137.8860775