condition mean min max ZT0-3 0.01184567475 0.0 0.0236913495 ZT4-7 0.03558905675 0.0 0.0711781135 ZT8-11 0.02151938925 0.0 0.0430387785 ZT12-15 0.00841055925 0.0 0.0168211185 ZT16-19 0.03062712425 0.0 0.0612542485 ZT20-23 0.012243725 0.0 0.02448745