condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0188442 0.0188442 0.0188442 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.049129400000000004 0.049129400000000004 0.049129400000000004 ZT20-23 0.0243582 0.0243582 0.0243582