pre_get_post output

object(WP_Query)#165 (46) {
  ["query"]=>
  array(2) {
    ["m"]=>
    string(6) "201608"
    ["post_type"]=>
    string(6) "events"
  }
  ["query_vars"]=>
  array(52) {
    ["m"]=>
    string(6) "201608"
    ["post_type"]=>
    string(6) "events"
    ["error"]=>
    string(0) ""
    ["p"]=>
    int(0)
    ["post_parent"]=>
    string(0) ""
    ["subpost"]=>
    string(0) ""
    ["subpost_id"]=>
    string(0) ""
    ["attachment"]=>
    string(0) ""
    ["attachment_id"]=>
    int(0)
    ["name"]=>
    string(0) ""
    ["static"]=>
    string(0) ""
    ["pagename"]=>
    string(0) ""
    ["page_id"]=>
    int(0)
    ["second"]=>
    string(0) ""
    ["minute"]=>
    string(0) ""
    ["hour"]=>
    string(0) ""
    ["w"]=>
    int(0)
    ["category_name"]=>
    string(0) ""
    ["tag"]=>
    string(0) ""
    ["cat"]=>
    string(0) ""
    ["tag_id"]=>
    string(0) ""
    ["author"]=>
    string(0) ""
    ["author_name"]=>
    string(0) ""
    ["feed"]=>
    string(0) ""
    ["tb"]=>
    string(0) ""
    ["paged"]=>
    int(0)
    ["comments_popup"]=>
    string(0) ""
    ["meta_key"]=>
    string(10) "event_date"
    ["meta_value"]=>
    string(0) ""
    ["preview"]=>
    string(0) ""
    ["s"]=>
    string(0) ""
    ["sentence"]=>
    string(0) ""
    ["fields"]=>
    string(0) ""
    ["menu_order"]=>
    string(0) ""
    ["category__in"]=>
    array(0) {
    }
    ["category__not_in"]=>
    array(0) {
    }
    ["category__and"]=>
    array(0) {
    }
    ["post__in"]=>
    array(0) {
    }
    ["post__not_in"]=>
    array(0) {
    }
    ["tag__in"]=>
    array(0) {
    }
    ["tag__not_in"]=>
    array(0) {
    }
    ["tag__and"]=>
    array(0) {
    }
    ["tag_slug__in"]=>
    array(0) {
    }
    ["tag_slug__and"]=>
    array(0) {
    }
    ["post_parent__in"]=>
    array(0) {
    }
    ["post_parent__not_in"]=>
    array(0) {
    }
    ["author__in"]=>
    array(0) {
    }
    ["author__not_in"]=>
    array(0) {
    }
    ["orderby"]=>
    string(10) "meta_value"
    ["order"]=>
    string(3) "ASC"
    ["post_per_page"]=>
    int(10)
    ["meta_query"]=>
    array(1) {
      [0]=>
      array(3) {
        ["key"]=>
        string(10) "event_date"
        ["value"]=>
        string(10) "2016-08-01"
        ["compare"]=>
        string(2) ">="
      }
    }
  }
  ["tax_query"]=>
  object(WP_Tax_Query)#110 (6) {
    ["queries"]=>
    array(0) {
    }
    ["relation"]=>
    string(3) "AND"
    ["table_aliases":protected]=>
    array(0) {
    }
    ["queried_terms"]=>
    array(0) {
    }
    ["primary_table"]=>
    NULL
    ["primary_id_column"]=>
    NULL
  }
  ["meta_query"]=>
  bool(false)
  ["date_query"]=>
  bool(false)
  ["post_count"]=>
  int(0)
  ["current_post"]=>
  int(-1)
  ["in_the_loop"]=>
  bool(false)
  ["comment_count"]=>
  int(0)
  ["current_comment"]=>
  int(-1)
  ["found_posts"]=>
  int(0)
  ["max_num_pages"]=>
  int(0)
  ["max_num_comment_pages"]=>
  int(0)
  ["is_single"]=>
  bool(false)
  ["is_preview"]=>
  bool(false)
  ["is_page"]=>
  bool(false)
  ["is_archive"]=>
  bool(true)
  ["is_date"]=>
  bool(true)
  ["is_year"]=>
  bool(false)
  ["is_month"]=>
  bool(true)
  ["is_day"]=>
  bool(false)
  ["is_time"]=>
  bool(false)
  ["is_author"]=>
  bool(false)
  ["is_category"]=>
  bool(false)
  ["is_tag"]=>
  bool(false)
  ["is_tax"]=>
  bool(false)
  ["is_search"]=>
  bool(false)
  ["is_feed"]=>
  bool(false)
  ["is_comment_feed"]=>
  bool(false)
  ["is_trackback"]=>
  bool(false)
  ["is_home"]=>
  bool(false)
  ["is_404"]=>
  bool(false)
  ["is_comments_popup"]=>
  bool(false)
  ["is_paged"]=>
  bool(false)
  ["is_admin"]=>
  bool(false)
  ["is_attachment"]=>
  bool(false)
  ["is_singular"]=>
  bool(false)
  ["is_robots"]=>
  bool(false)
  ["is_posts_page"]=>
  bool(false)
  ["is_post_type_archive"]=>
  bool(true)
  ["query_vars_hash":"WP_Query":private]=>
  string(32) "c24e634661e5ca6feafbdb4e850c6370"
  ["query_vars_changed":"WP_Query":private]=>
  bool(false)
  ["thumbnails_cached"]=>
  bool(false)
  ["stopwords":"WP_Query":private]=>
  NULL
  ["compat_fields":"WP_Query":private]=>
  array(2) {
    [0]=>
    string(15) "query_vars_hash"
    [1]=>
    string(18) "query_vars_changed"
  }
  ["compat_methods":"WP_Query":private]=>
  array(2) {
    [0]=>
    string(16) "init_query_flags"
    [1]=>
    string(15) "parse_tax_query"
  }
}