condition mean min max ZT0-3 0.0147926475 0.0 0.029585295 ZT4-7 0.025821970750000003 0.0 0.051643941500000005 ZT8-11 0.0732973145 0.048149817000000004 0.09844481199999999 ZT12-15 0.4992866555 0.428626524 0.569946787 ZT16-19 0.877170241 0.5628779700000001 1.191462512 ZT20-23 0.5636209075 0.44144900249999997 0.6857928125