condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.010220304749999999 0.0082845595 0.01215605 ZT12-15 0.00869995225 0.0 0.0173999045 ZT16-19 0.017646974 0.0159822635 0.0193116845 ZT20-23 0.0209734705 0.012681626000000001 0.029265315