how to read google trends graph Trends and Keyword Ideas

{
  "deviceSearches": [
    {
      "device": "DESKTOP",
      "searchCount": "161958"
    },
    {
      "device": "MOBILE",
      "searchCount": "16619"
    },
    {
      "device": "TABLET",
      "searchCount": "323"
    }
  ]
}