condition mean min max ZT0-3 0.093677875 0.05585775 0.131498 ZT4-7 0.01912635 0.01912635 0.01912635 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.07441615 0.07441615 0.07441615