public function __construct()
 {
     global $status, $page;
     parent::__construct(array('singular' => 'station', 'plural' => 'stations', 'ajax' => false));
 }
 protected function get_primary_column_name()
 {
     $columns = $this->get_columns();
     $default = $this->get_default_primary_column_name();
     // If the primary column doesn't exist fall back to the
     // first non-checkbox column.
     if (!isset($columns[$default])) {
         $default = Live_Weather_Station_List_Table::get_default_primary_column_name();
     }
     $column = apply_filters('list_table_primary_column', $default, $this->screen->id);
     if (empty($column) || !isset($columns[$column])) {
         $column = $default;
     }
     return $column;
 }