condition mean min max ZT0-3 0.01399985 0.01399985 0.01399985 ZT4-7 0.0 0.0 0.0 ZT8-11 0.02114265 0.02114265 0.02114265 ZT12-15 0.02557425 0.02557425 0.02557425 ZT16-19 0.01709545 0.01709545 0.01709545 ZT20-23 0.0 0.0 0.0