condition mean min max ZT0-3 23.03273 10.29924 29.946599999999997 ZT4-7 10.698585 10.698585 10.698585 ZT8-11 10.13664 10.13664 10.13664 ZT12-15 12.306215000000002 11.965645 12.646785000000001 ZT16-19 10.312805 10.312805 10.312805 ZT20-23 27.56335 27.56335 27.56335