title: Loading Json into Pandas dataframe
body: <p>I have a valid json file with the following format that I am trying to load into pandas.</p>
  
  <pre><code>{
      "testvalues": [
          [1424754000000, 0.7413],
          [1424840400000, 0.7375],
          [1424926800000, 0.7344],
          [1425013200000, 0.7375],
          [1425272400000, 0.7422],
          [1425358800000, 0.7427]
      ]
  }
  </code></pre>
  
  <p>There is a Pandas function called read_json() that takes in json files/buffers and spits out the dataframe but I have not been able to get it to load correctly, which is to show two columns rather than a single column with elements looking like [1424754000000, 0.7413]. I have tried different 'orient' and 'typ' to no avail. What options should I pass into the function to get it to spit out a two column dataframe corresponding the timestamp and the value?</p>