condition mean min max ZT0-3 40.627691666666664 9.099225 59.29805 ZT4-7 10.196 10.196 10.196 ZT8-11 10.5653 10.5653 10.5653 ZT12-15 14.250602500000001 10.423205 18.078000000000003 ZT16-19 23.2956 23.2956 23.2956 ZT20-23 46.6662 46.6662 46.6662