condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.38170713133333334 0.0 0.7634142626666667 ZT12-15 0.019515671833333335 0.0 0.03903134366666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0.017668348 0.0 0.035336696