condition mean min max ZT0-3 0.1641046915 0.162613292 0.165596091 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0115311485 0.0 0.023062297 ZT12-15 0.027569727 0.0 0.055139454 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0