condition mean min max ZT0-3 0.45107600000000003 0.447901 0.454251 ZT4-7 0.9165694999999999 0.9165694999999999 0.9165694999999999 ZT8-11 1.3782455 1.3782455 1.3782455 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.4503475 0.4503475 0.4503475