condition mean min max ZT0-3 1.227848107 1.160695708 1.295000506 ZT4-7 2.0671017635 1.3009583100000002 2.833245217 ZT8-11 1.1773106439999999 0.6045240685 1.7500972195 ZT12-15 0.02503948275 0.007298655 0.0427803105 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0395226655 0.034906713 0.044138618