condition mean min max ZT0-3 0.009912783333333333 0.0 0.02973835 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0285286 0.0285286 0.0285286 ZT12-15 0.015460375 0.0 0.03092075 ZT16-19 0.053101 0.053101 0.053101 ZT20-23 0.0299636 0.0299636 0.0299636