condition mean min max ZT0-3 0.04036445 0.04036445 0.04036445 ZT4-7 0.047115699999999996 0.047115699999999996 0.047115699999999996 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0204539 0.0204539 0.0204539 ZT20-23 0.0613196 0.0613196 0.0613196