condition mean min max ZT0-3 0.32025400000000004 0.1475555 0.4929525 ZT4-7 0.24604399999999998 0.24604399999999998 0.24604399999999998 ZT8-11 0.050135 0.050135 0.050135 ZT12-15 0 0 0 ZT16-19 0.2420462 0.2420462 0.2420462 ZT20-23 0.3896865 0.3896865 0.3896865