condition mean min max ZT0-3 0.009595783333333333 0.0094068 0.00989375 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.004932 0.0 0.009864 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0