condition mean min max ZT0-3 0.3663361666666667 0.0 0.5526085000000001 ZT4-7 0.2608605 0.2608605 0.2608605 ZT8-11 0.27379 0.27379 0.27379 ZT12-15 0.26728 0.0 0.53456 ZT16-19 0.530905 0.530905 0.530905 ZT20-23 0.0 0.0 0.0