diff --git a/pandora_console/include/ajax/module.php b/pandora_console/include/ajax/module.php
index 7805d4c467..8751e7e97f 100755
--- a/pandora_console/include/ajax/module.php
+++ b/pandora_console/include/ajax/module.php
@@ -394,6 +394,12 @@ if (check_login()) {
         $index = 0;
         foreach ($columns as $col => $attr) {
             $table->head[$index] = $col;
+            if ($col === 'Data') {
+                $table->head[$index] .= ui_print_help_tip(
+                    __('In Pandora FMS, data is stored compressed. The data visualization in database, charts or CSV exported data won\'t match, because is interpreted at runtime. Please check \'Pandora FMS Engineering\' chapter from documentation.'),
+                    true
+                );
+            }
 
             if (isset($attr['align'])) {
                 $table->align[$index] = $attr['align'];
diff --git a/pandora_console/include/graphs/export_data.php b/pandora_console/include/graphs/export_data.php
index 5843ca232d..f4de87ff3c 100644
--- a/pandora_console/include/graphs/export_data.php
+++ b/pandora_console/include/graphs/export_data.php
@@ -1,18 +1,32 @@
 <?php
+/**
+ * CSV charts.
+ *
+ * @category   CSV charts
+ * @package    Pandora FMS
+ * @subpackage Community
+ * @version    1.0.0
+ * @license    See below
+ *
+ *    ______                 ___                    _______ _______ ________
+ *   |   __ \.-----.--.--.--|  |.-----.----.-----. |    ___|   |   |     __|
+ *  |    __/|  _  |     |  _  ||  _  |   _|  _  | |    ___|       |__     |
+ * |___|   |___._|__|__|_____||_____|__| |___._| |___|   |__|_|__|_______|
+ *
+ * ============================================================================
+ * Copyright (c) 2005-2021 Artica Soluciones Tecnologicas
+ * Please see http://pandorafms.org for full contribution list
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation for version 2.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * ============================================================================
+ */
 
-// Pandora FMS - http://pandorafms.com
-// ==================================================
-// Copyright (c) 2005-2021 Artica Soluciones Tecnologicas
-// Please see http://pandorafms.org for full contribution list
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License
-// as published by the Free Software Foundation for version 2.
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-// Don't use authentication methods.
-// This file only uses data retrieved in a request.
+// Load files.
 require_once '../../include/config.php';
 require_once '../../include/functions.php';
 enterprise_include_once('include/functions_reporting_csv.php');
@@ -21,12 +35,14 @@ global $config;
 
 $user_language = get_user_language($config['id_user']);
 $l10n = null;
-if (file_exists('../languages/'.$user_language.'.mo')) {
-    $l10n = new gettext_reader(new CachedFileReader('../languages/'.$user_language.'.mo'));
+if (file_exists('../languages/'.$user_language.'.mo') === true) {
+    $l10n = new gettext_reader(
+        new CachedFileReader('../languages/'.$user_language.'.mo')
+    );
     $l10n->load_tables();
 }
 
-// Get data
+// Get data.
 $type = (string) get_parameter('type', 'csv');
 
 $data = (string) get_parameter('data');
@@ -36,10 +52,8 @@ $default_filename = 'data_exported - '.date($config['date_format']);
 $filename = (string) get_parameter('filename', $default_filename);
 $filename = io_safe_output($filename);
 
-// Using first-class functions to avoid namespace conflicts
-// Type: 'csv'
 /*
-    $data = array(
+ * $data = array(
  *   'head' => array(<column>,<column>,...,<column>),
  *   'data' => array(
  *     array(<data>,<data>,...,<data>),
@@ -49,6 +63,7 @@ $filename = io_safe_output($filename);
  *   )
  * );
  */
+
 $output_csv = function ($data, $filename) {
     global $config;
 
@@ -56,20 +71,22 @@ $output_csv = function ($data, $filename) {
 
     $excel_encoding = (bool) get_parameter('excel_encoding', false);
 
-    // CSV Output
+    // CSV Output.
     header('Content-Type: text/csv; charset=UTF-8');
     header('Content-Disposition: attachment; filename="'.$filename.'.csv"');
 
-    // BOM
-    if (!$excel_encoding) {
-        print pack('C*', 0xEF, 0xBB, 0xBF);
+    // BOM.
+    if ($excel_encoding === false) {
+        echo pack('C*', 0xEF, 0xBB, 0xBF);
     }
 
     // Header
-    // Item / data
+    // Item / data.
     foreach ($data as $items) {
-        if (!isset($items['head']) || !isset($items['data'])) {
-                throw new Exception(__('An error occured exporting the data'));
+        if (isset($items['head']) === false
+            || isset($items['data']) === false
+        ) {
+            throw new Exception(__('An error occured exporting the data'));
         }
 
         // Get key for item value.
@@ -84,7 +101,7 @@ $output_csv = function ($data, $filename) {
             $item = str_replace('--> '.__('Selected'), '', $item);
             $line = implode($separator, $item);
 
-            if ($excel_encoding) {
+            if ($excel_encoding === true) {
                 echo mb_convert_encoding($line, 'UTF-16LE', 'UTF-8')."\n";
             } else {
                 echo $line."\n";
@@ -93,9 +110,8 @@ $output_csv = function ($data, $filename) {
     }
 };
 
-// Type: 'json'
 /*
-    $data = array(
+ * $data = array(
  *   array(
  *     'key' => <value>,
  *     'key' => <value>,
@@ -117,8 +133,9 @@ $output_csv = function ($data, $filename) {
  *   )
  * );
  */
+
 $output_json = function ($data, $filename) {
-    // JSON Output
+    // JSON Output.
     header('Content-Type: application/json; charset=UTF-8');
     header('Content-Disposition: attachment; filename="'.$filename.'.json"');
 
@@ -134,7 +151,7 @@ $output_json = function ($data, $filename) {
 };
 
 try {
-    if (!$data) {
+    if (empty($data) === true) {
         throw new Exception(__('An error occured exporting the data'));
     }
 
diff --git a/pandora_console/include/graphs/flot/pandora.flot.js b/pandora_console/include/graphs/flot/pandora.flot.js
index e8a0f5e0b0..308ec1ddfa 100644
--- a/pandora_console/include/graphs/flot/pandora.flot.js
+++ b/pandora_console/include/graphs/flot/pandora.flot.js
@@ -2390,7 +2390,7 @@ function pandoraFlotArea(
 
         if (series.data[j]) {
           var y = series.data[j][1];
-          var x = Math.round(series.data[j][0]) - 1;
+          var x = Math.round(series.data[j][0]);
         }
       }
 
diff --git a/pandora_console/include/javascript/jquery.pandora.js b/pandora_console/include/javascript/jquery.pandora.js
index 812806f83b..16907db4fc 100644
--- a/pandora_console/include/javascript/jquery.pandora.js
+++ b/pandora_console/include/javascript/jquery.pandora.js
@@ -45,7 +45,7 @@ $(document).ready(function() {
     jQuery.post(
       "ajax.php",
       {
-        page: "operation/messages/message_list",
+        page: "operation/messages/message_list"
       },
       function(data, status) {
         $("#dialog_messages")
@@ -58,10 +58,10 @@ $(document).ready(function() {
             modal: true,
             overlay: {
               opacity: 0.5,
-              background: "black",
+              background: "black"
             },
             width: 700,
-            height: 300,
+            height: 300
           })
           .show();
       },
@@ -80,7 +80,7 @@ $(document).ready(function() {
     jQuery.post(
       "ajax.php",
       {
-        page: "operation/system_alert",
+        page: "operation/system_alert"
       },
       function(data, status) {
         $("#alert_messages").show();
@@ -104,7 +104,7 @@ $(document).ready(function() {
       "ajax.php",
       {
         page: "general/alert_enterprise",
-        message: elem,
+        message: elem
       },
       function(data, status) {
         $("#alert_messages").show();
@@ -130,7 +130,7 @@ $(document).ready(function() {
       "ajax.php",
       {
         page: "general/alert_enterprise",
-        message: elem,
+        message: elem
       },
       function(data, status) {
         $("#alert_messages").show();
@@ -155,7 +155,7 @@ $(document).ready(function() {
       "ajax.php",
       {
         page: "general/alert_enterprise",
-        message: elem,
+        message: elem
       },
       function(data, status) {
         $("#alert_messages").show();
@@ -190,7 +190,7 @@ $(document).ready(function() {
         width: 850,
         overlay: {
           opacity: 0.5,
-          background: "black",
+          background: "black"
         },
         open: function() {
           if (hide_counter != 1) {
@@ -212,7 +212,7 @@ $(document).ready(function() {
           } else {
             $("#ok_buttom").show();
           }
-        },
+        }
       });
 
       $("#submit-hide-license-error-msg").click(function() {
@@ -230,8 +230,8 @@ $(document).ready(function() {
       width: 620,
       overlay: {
         opacity: 0.5,
-        background: "black",
-      },
+        background: "black"
+      }
     });
   }
 
@@ -244,8 +244,8 @@ $(document).ready(function() {
       width: 520,
       overlay: {
         opacity: 0.5,
-        background: "black",
-      },
+        background: "black"
+      }
     });
   }
 
@@ -258,8 +258,8 @@ $(document).ready(function() {
       width: 520,
       overlay: {
         opacity: 0.5,
-        background: "black",
-      },
+        background: "black"
+      }
     });
   }
 
@@ -327,7 +327,7 @@ $(document).ready(function() {
     left:
       +parseInt(screen.width / 2) -
       parseInt($("#alert_messages").css("width")) / 2 +
-      "px",
+      "px"
   });
 });
 
diff --git a/pandora_console/operation/agentes/interface_traffic_graph_win.php b/pandora_console/operation/agentes/interface_traffic_graph_win.php
index e89937a0c1..3f759999ec 100644
--- a/pandora_console/operation/agentes/interface_traffic_graph_win.php
+++ b/pandora_console/operation/agentes/interface_traffic_graph_win.php
@@ -284,14 +284,34 @@ if (empty($server_id) === false) {
     $menu_form .= html_print_input_hidden('server', $server_id, true);
 }
 
+$menu_form .= '<div class="module_graph_menu_dropdown">';
+$menu_form .= '<div id="module_graph_menu_header" class="module_graph_menu_header">';
+$menu_form .= html_print_image(
+    'images/arrow_down_green.png',
+    true,
+    [
+        'class' => 'module_graph_menu_arrow',
+        'float' => 'left',
+    ],
+    false,
+    false,
+    true
+);
+$menu_form .= '<span style="flex: 2; justify-content:center;" class="flex-row">';
+$menu_form .= '<b>'.__('Graph configuration menu').'</b>';
+$menu_form .= ui_print_help_tip(
+    __('In Pandora FMS, data is stored compressed. The data visualization in database, charts or CSV exported data won\'t match, because is interpreted at runtime. Please check \'Pandora FMS Engineering\' chapter from documentation.'),
+    true
+);
+$menu_form .= '</span>';
+$menu_form .= '</div>';
+$menu_form .= '<div class="module_graph_menu_content module_graph_menu_content_closed" style="display:none;">';
+$menu_form .= $form_table;
+$menu_form .= '</div>';
+$menu_form .= '</div>';
+$menu_form .= '</form>';
+
 echo $menu_form;
-echo '<div class="module_graph_menu_dropdown">
-        <div id="module_graph_menu_header" class="module_graph_menu_header">
-            '.html_print_image('images/arrow_down_green.png', true, ['class' => 'module_graph_menu_arrow', 'float' => 'left'], false, false, true).'
-            <span style="flex: 2;">'.__('Graph configuration menu').'</span></div>
-        <div class="module_graph_menu_content module_graph_menu_content_closed" style="display:none;">'.$form_table.'</div>
-    </div>';
-echo '</form>';
 
 // Hidden div to forced title.
 html_print_div(
diff --git a/pandora_console/operation/agentes/stat_win.php b/pandora_console/operation/agentes/stat_win.php
index 9211027113..383c108379 100644
--- a/pandora_console/operation/agentes/stat_win.php
+++ b/pandora_console/operation/agentes/stat_win.php
@@ -423,8 +423,12 @@ ui_print_message_dialog(
             false,
             true
         );
-        $menu_form .= '<span style="flex: 2;">';
-        $menu_form .= __('Graph configuration menu');
+        $menu_form .= '<span style="flex: 2; justify-content:center;" class="flex-row">';
+        $menu_form .= '<b>'.__('Graph configuration menu').'</b>';
+        $menu_form .= ui_print_help_tip(
+            __('In Pandora FMS, data is stored compressed. The data visualization in database, charts or CSV exported data won\'t match, because is interpreted at runtime. Please check \'Pandora FMS Engineering\' chapter from documentation.'),
+            true
+        );
         $menu_form .= '</span>';
         $menu_form .= '</div>';
         $menu_form .= '<div class="module_graph_menu_content module_graph_menu_content_closed" style="display:none;">';