condition mean min max ZT0-3 0.013690711999999999 0.0 0.027381423999999998 ZT4-7 0.023898437999999998 0.0 0.047796875999999995 ZT8-11 0.02002820475 0.0 0.0400564095 ZT12-15 0.05448200475 0.0465432575 0.062420752 ZT16-19 0.0176987445 0.0 0.035397489 ZT20-23 0.06421667149999999 0.0536420675 0.07479127549999999