condition mean min max ZT0-3 0.03191225 0.0 0.0638245 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0632295 0.0632295 0.0632295 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0