condition mean min max ZT0-3 0.040413 0.0 0.080826 ZT4-7 0.0 0.0 0.0 ZT8-11 0.5656785 0.5656785 0.5656785 ZT12-15 0 0 0 ZT16-19 0.9527589999999999 0.9527589999999999 0.9527589999999999 ZT20-23 0.1589235 0.1589235 0.1589235