condition mean min max ZT0-3 0.0078358985 0.0 0.015671797 ZT4-7 0.0 0.0 0.0 ZT8-11 0.14666251149999998 0.045852686000000004 0.247472337 ZT12-15 0.13939749025 0.112834923 0.1659600575 ZT16-19 0.1054011245 0.057254606 0.153547643 ZT20-23 0.02429762475 0.0 0.0485952495