private function queryCoreReportingApi($tableId) {

    $optParams = array(
        'dimensions' => 'ga:source,ga:keyword',
        'sort' => '-ga:visits,ga:keyword',
        'filters' => 'ga:medium==organic',
        'max-results' => '25');

    return $this->analytics->data_ga->get(
        urldecode($tableId),
        '2010-01-01',
        '2010-01-15',
        'ga:visits',
        $optParams);
  }