help using dict. with node for max

Hi, new to anything node.js related.
I am using this example code for Posenet values:
https://github.com/yuichkun/n4m-posenet
I am trying to unpack the node.script index.js object into individual values for each pose. For example the x and y coordinate of the Nose. I can route all the positions of the keypoints on the list but not sure how to go about the position of a specific keypoint. I know I could do something with zl objects but it seems like it should be simpler.

Any clues much appreciated.