condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.33708915425 0.0952841665 0.578894142 ZT12-15 1.5011997275 1.247766967 1.754632488 ZT16-19 1.65294439075 1.3307210465 1.975167735 ZT20-23 0.6216863854999999 0.5111624475 0.7322103234999999