condition mean min max ZT0-3 0.01016095 0.01016095 0.01016095 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0104466 0.0104466 0.0104466 ZT20-23 0.0051605 0.0051605 0.0051605