condition mean min max ZT0-3 259.581019 259.581019 259.581019 ZT4-7 111.7292025 111.7292025 111.7292025 ZT8-11 137.8731935 137.8731935 137.8731935 ZT12-15 172.8866265 172.8866265 172.8866265 ZT16-19 717.734829 717.734829 717.734829 ZT20-23 653.795494 653.795494 653.795494