{
  "comment" : "PromQL function definition for Kibana. See https://prometheus.io/docs/prometheus/latest/querying/functions/",
  "type" : "promql_across_series",
  "name" : "stddev",
  "description" : "Calculates the population standard deviation across the input vector.",
  "signatures" : [
    {
      "params" : [
        {
          "name" : "v",
          "type" : "instant_vector",
          "optional" : false,
          "description" : "Instant vector input."
        }
      ],
      "variadic" : false,
      "returnType" : "instant vector"
    }
  ],
  "examples" : [
    "stddev(http_requests_total)"
  ],
  "preview" : true,
  "snapshot_only" : false
}