condition mean min max ZT0-3 0.023152325 0.0 0.04630465 ZT4-7 0.04557255 0.04557255 0.04557255 ZT8-11 0.0927811 0.0927811 0.0927811 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0455231 0.0455231 0.0455231