condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.006499125749999999 0.0 0.012998251499999999 ZT8-11 0.0 0.0 0.0 ZT12-15 0.005463878 0.0042093905 0.0067183655 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00809690475 0.0 0.0161938095