condition mean min max ZT0-3 0.08999145 0.08999145 0.08999145 ZT4-7 0.0465999 0.0465999 0.0465999 ZT8-11 0.0188776 0.0188776 0.0188776 ZT12-15 0.0 0.0 0.0 ZT16-19 0.02044295 0.02044295 0.02044295 ZT20-23 0.09070925 0.09070925 0.09070925