{"$x":["$Z"],"$y":"a$","$z":"aa","ac":{"$y":[{"$":0.14233842690327608,"$j":128.25258536631162}],"$z":[{"$":0.165660251559244,"$j":152.8620049805028}],"ab":[{"$":0.16218335175632026,"$j":143.37908038761435}]}}