I am trying to get the CPU usage from the /apis/events.k8s.io/v1beta1 endpoint in the kubernetes internal api.

I run the following command

kubectl proxy --port=8080

Then load the url http://localhost:8080/apis/metrics.k8s.io/v1beta1/pods and get a response similar to this one

{
  "kind": "PodMetricsList",
  "apiVersion": "metrics.k8s.io/v1beta1",
  "metadata": {
    "selfLink": "/apis/metrics.k8s.io/v1beta1/pods"
  },
  "items": [
    {
      "metadata": {
        "name": "name-of-the-container-667656d796-p586s",
        "namespace": "namespace-name",
        "selfLink": "/apis/metrics.k8s.io/v1beta1/pods/name-of-the-container-667656d796-p586s",
        "creationTimestamp": "2019-11-20T21:34:02Z"
      },
      "timestamp": "2019-11-20T21:33:02Z",
      "window": "30s",
      "containers": [
        {
          "name": "name-of-the-container",
          "usage": {
            "cpu": "350748682n",
            "memory": "238860Ki"
          }
        }
      ]
    }
  ]
}

The cpu value is 350748682n. From this discussion n is "1/1000000000 (1 billionth) of a cpu"

I am also seeing values like 14513u

I have reviewed the quantity definition but do not see anything referencing u

What are all the possible units used to report this metric?