condition mean min max ZT0-3 1.2478197500000001 0.9576594999999999 1.5379800000000001 ZT4-7 1.6135000000000002 1.6135000000000002 1.6135000000000002 ZT8-11 9.827605 9.827605 9.827605 ZT12-15 0 0 0 ZT16-19 7.628785000000001 7.628785000000001 7.628785000000001 ZT20-23 4.0859950000000005 4.0859950000000005 4.0859950000000005