condition mean min max ZT0-3 0.62123546675 0.3521077825 0.890363151 ZT4-7 6.3716084120000005 1.3315367935 11.411680030500001 ZT8-11 20.4045479075 17.75704142 23.052054395 ZT12-15 10.504212356250001 8.5647112985 12.443713414 ZT16-19 6.93055904825 6.422566784000001 7.4385513125 ZT20-23 9.822542327250002 8.8126972895 10.832387365