condition mean min max ZT0-3 0.018300166666666666 0.0 0.0549005 ZT4-7 0.0 0.0 0.0 ZT8-11 0.056698 0.056698 0.056698 ZT12-15 0.05829575 0.0551395 0.061452 ZT16-19 0.0 0.0 0.0 ZT20-23 0.12129999999999999 0.12129999999999999 0.12129999999999999