condition mean min max ZT0-3 0.0359728585 0.0 0.071945717 ZT4-7 0.17923952399999998 0.016323306 0.342155742 ZT8-11 0.024906988 0.0 0.049813976 ZT12-15 0.037895289 0.025173933 0.050616644999999995 ZT16-19 0.213429941 0.16030580500000002 0.266554077 ZT20-23 0.15476631966666665 0.13958167933333332 0.16995095999999998