condition mean min max ZT0-3 0.01042093725 0.0 0.0208418745 ZT4-7 0.031308586 0.0 0.062617172 ZT8-11 0.27135979425 0.0 0.5427195885 ZT12-15 0.28208260274999997 0.27260092599999997 0.29156427949999997 ZT16-19 0.223332001 0.1262775715 0.3203864305 ZT20-23 0.07538673274999999 0.036915957 0.1138575085