condition mean min max ZT0-3 0.03905 0.01531905 0.06278095 ZT4-7 0.046899750000000004 0.046899750000000004 0.046899750000000004 ZT8-11 0.0469909 0.0469909 0.0469909 ZT12-15 0 0 0 ZT16-19 0.04620295 0.04620295 0.04620295 ZT20-23 0.0464624 0.0464624 0.0464624