condition mean min max ZT0-3 0.03130575 0.0 0.0626115 ZT4-7 0.0 0.0 0.0 ZT8-11 0.09162 0.09162 0.09162 ZT12-15 0.0 0.0 0.0 ZT16-19 0.04627175 0.0 0.0925435 ZT20-23 0 0 0