condition mean min max ZT0-3 0.030291233333333334 0.01381075 0.05151895 ZT4-7 0.0 0.0 0.0 ZT8-11 0.025408 0.025408 0.025408 ZT12-15 0.013790675 0.01376925 0.0138121 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0425891 0.0425891 0.0425891