title: Facebook page insights does not return for page_storytellers_by_country/days_28 and page_storytellers_by_age_gender/days_28
body: <p>Hi  um having a trouble of retrieving data for my page. These are the URL's um using to fetch data.</p>
  
  <pre><code>https://graph.facebook.com/140902935963424/insights/page_storytellers_by_country/days_28&amp;access_token=[access_token]
  </code></pre>
  
  <p>and</p>
  
  <pre><code>https://graph.facebook.com/140902935963424/insights/page_storytellers_by_age_gender/days_28&amp;access_token=[access_token]
  </code></pre>
  
  <p>Um getting an empty result.</p>
  
  <pre><code> "data": [
    {
       "id": "140902935963424/insights/page_storytellers_by_age_gender/days_28",
       "name": "page_storytellers_by_age_gender",
       "period": "days_28",
       "values": [
          {
             "value": [
  
             ],
             "end_time": "2012-08-25T07:00:00+0000"
          },
          {
             "value": [
  
             ],
             "end_time": "2012-08-26T07:00:00+0000"
          },
          {
             "value": [
  
             ],
             "end_time": "2012-08-27T07:00:00+0000"
          }
       ],
       "title": "28 Days Demographics: People Talking About This",
       "description": "28 Days The number of People Talking About the Page by user age and gender (Unique Users)"
    }
  </code></pre>
  
  <p>],</p>
  
  <p>but um getting impressions for other urls like </p>
  
  <pre><code>    https://graph.facebook.com/140902935963424/insights/page_impressions_by_city_unique/days_28&amp;access_token=[access_token]
  </code></pre>
  
  <p>and um getting all the results. I want to know what has gone wrong. I found this like saying something about this. 
       <a href="https://developers.facebook.com/bugs/433795983308964/" rel="nofollow">https://developers.facebook.com/bugs/433795983308964/</a>   He s talking about a threshhold limit which has undefined. Can any one help. Thank you.</p>