condition mean min max ZT0-3 1269.732984 1269.732984 1269.732984 ZT4-7 1431.6982764999998 1431.6982764999998 1431.6982764999998 ZT8-11 1467.2678799999999 1467.2678799999999 1467.2678799999999 ZT12-15 1549.194227 1549.194227 1549.194227 ZT16-19 1350.212894 1350.212894 1350.212894 ZT20-23 1045.8349815 1045.8349815 1045.8349815