condition mean min max ZT0-3 0.3970105 0.3942485 0.3997725 ZT4-7 0.939828 0.939828 0.939828 ZT8-11 0.5799585 0.5799585 0.5799585 ZT12-15 0 0 0 ZT16-19 0.7427155000000001 0.7427155000000001 0.7427155000000001 ZT20-23 0.8790255 0.8790255 0.8790255