condition mean min max ZT0-3 1.5922053333333333 0.235871 2.34795 ZT4-7 0.33843 0.33843 0.33843 ZT8-11 0.0 0.0 0.0 ZT12-15 0.2955605 0.23824250000000002 0.3528785 ZT16-19 0.3241655 0.3241655 0.3241655 ZT20-23 1.7290100000000002 1.7290100000000002 1.7290100000000002