diff --git a/embed.php b/embed.php
index 91a3cac..7ef219b 100644
--- a/embed.php
+++ b/embed.php
@@ -135,6 +135,8 @@
             floatingtime = result.floatingtime,
             yaxismin = result.yaxismin;
             yaxismax = result.yaxismax;
+            yaxismin2 = result.yaxismin2;
+            yaxismax2 = result.yaxismax2;
             feedlist = result.feedlist;
             
             // show settings
diff --git a/group_graph.js b/group_graph.js
index 060df4b..3419690 100644
--- a/group_graph.js
+++ b/group_graph.js
@@ -846,8 +846,8 @@ function graph_draw()
             out += "<td>"+feedlist[z].id+":"+feedlist[z].tag+": "+feedlist[z].name+"</td>";
             var quality = Math.round(100 * (1-(feedlist[z].stats.npointsnull/feedlist[z].stats.npoints)));
             out += "<td>"+quality+"% ("+(feedlist[z].stats.npoints-feedlist[z].stats.npointsnull)+"/"+feedlist[z].stats.npoints+")</td>";
-            out += "<td>"+feedlist[z].stats.minval.toFixed(dp)+"</td>";
-            out += "<td>"+feedlist[z].stats.maxval.toFixed(dp)+"</td>";
+            if(!isNaN(Number(feedlist[z].stats.minval))) out += "<td>"+feedlist[z].stats.minval.toFixed(dp)+"</td>";
+            if(!isNaN(Number(feedlist[z].stats.maxval))) out += "<td>"+feedlist[z].stats.maxval.toFixed(dp)+"</td>";
             out += "<td>"+feedlist[z].stats.diff.toFixed(dp)+"</td>";
             out += "<td>"+feedlist[z].stats.mean.toFixed(dp)+"</td>";
             out += "<td>"+feedlist[z].stats.stdev.toFixed(dp)+"</td>";
diff --git a/locale/fr_FR/LC_MESSAGES/messages.mo b/locale/fr_FR/LC_MESSAGES/messages.mo
index c4e2d6b..c9f7f3b 100644
Binary files a/locale/fr_FR/LC_MESSAGES/messages.mo and b/locale/fr_FR/LC_MESSAGES/messages.mo differ
diff --git a/locale/fr_FR/LC_MESSAGES/messages.po b/locale/fr_FR/LC_MESSAGES/messages.po
index 41e9dd1..ac07f77 100644
--- a/locale/fr_FR/LC_MESSAGES/messages.po
+++ b/locale/fr_FR/LC_MESSAGES/messages.po
@@ -1,15 +1,15 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: \n"
-"POT-Creation-Date: 2019-10-20 15:11+0200\n"
-"PO-Revision-Date: 2019-10-20 15:23+0200\n"
+"POT-Creation-Date: 2020-08-28 12:32+0200\n"
+"PO-Revision-Date: 2020-08-28 12:32+0200\n"
 "Last-Translator: Aymeric THIBAUT\n"
 "Language-Team: Aymeric THIBAUT\n"
 "Language: fr_FR\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 2.2.4\n"
+"X-Generator: Poedit 2.4.1\n"
 "X-Poedit-Basepath: ../../..\n"
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"
 "X-Poedit-SearchPath-0: .\n"
@@ -38,16 +38,108 @@ msgstr "Supprimer"
 msgid "Save"
 msgstr "Enregistrer"
 
-#: graph.js:691 view.php:421
+#: embed.php:59 view.php:59
+msgid "Refresh"
+msgstr "Rafraîchir"
+
+#: embed.php:61 view.php:61
+msgid "1 hour"
+msgstr "1 heure"
+
+#: embed.php:62 view.php:62
+msgid "6 hours"
+msgstr "6 heures"
+
+#: embed.php:63 view.php:63
+msgid "12 hours"
+msgstr "12 heures"
+
+#: embed.php:64 view.php:64
+msgid "24 hours"
+msgstr "24 heures"
+
+#: embed.php:65 view.php:65
+msgid "1 Week"
+msgstr "1 semaine"
+
+#: embed.php:66 view.php:66
+msgid "2 Weeks"
+msgstr "2 semaines"
+
+#: embed.php:67 view.php:67 view.php:74
+msgid "Month"
+msgstr "Mois"
+
+#: embed.php:68 view.php:68 view.php:75
+msgid "Year"
+msgstr "Année"
+
+#: embed.php:104 view.php:280
+msgid "Select a feed"
+msgstr "Sélectionner un flux"
+
+#: embed.php:105 view.php:281
+msgid "Please select a feed from the Feeds List"
+msgstr "Sélectionner SVP un flux à partir de la liste Flux"
+
+#: embed.php:106 view.php:282
+msgid "Select graph"
+msgstr "Sélectionner graphique"
+
+#: embed.php:107 view.php:218 view.php:283
+msgid "Show CSV Output"
+msgstr "Afficher sortie CSV"
+
+#: embed.php:108 view.php:284
+msgid "Hide CSV Output"
+msgstr "Masquer sortie CSV"
+
+#: embed.php:109 view.php:285
+msgid "Lines"
+msgstr "Lignes"
+
+#: embed.php:110 view.php:286
+msgid "Bars"
+msgstr "Barres"
+
+#: embed.php:111 view.php:287
+msgid "Points"
+msgstr "Points"
+
+#: embed.php:112 view.php:95 view.php:288
+msgid "Histogram"
+msgstr "Histogramme"
+
+#: embed.php:113 view.php:289
+msgid "Move up"
+msgstr "Monter"
+
+#: embed.php:114 view.php:290
+msgid "Move down"
+msgstr "Descendre"
+
+#: embed.php:115 view.php:291
+msgid "Window"
+msgstr "Fenêtre"
+
+#: embed.php:116 view.php:292
+msgid "Length"
+msgstr "Longueur"
+
+#: graph.js:632 view.php:392
 msgid "Received data not in correct format. Check the logs for more details"
 msgstr ""
 "Les données reçues ne sont pas de format correct. Vérifier les journaux pour "
 "plus de détails"
 
-#: graph.js:692 graph.js:714 view.php:422
+#: graph.js:633 graph.js:659 view.php:393
 msgid "Request error"
 msgstr "Erreur de requête"
 
+#: graph.js:661
+msgid "Remove missing"
+msgstr "Retirer les manquants"
+
 #: graph_menu.php:4
 msgid "Graphs"
 msgstr "Graphiques"
@@ -56,357 +148,298 @@ msgstr "Graphiques"
 msgid "Data viewer"
 msgstr "Visualiseur de données"
 
-#: view.php:57
+#: view.php:72
 msgid "Day"
 msgstr "Jour"
 
-#: view.php:57
+#: view.php:72
 msgid "D"
 msgstr ""
 
-#: view.php:58
+#: view.php:73
 msgid "Week"
 msgstr "Semaine"
 
-#: view.php:58
+#: view.php:73
 msgid "W"
 msgstr ""
 
-#: view.php:59
-msgid "Month"
-msgstr "Mois"
-
-#: view.php:59
+#: view.php:74
 msgid "M"
 msgstr ""
 
-#: view.php:60
-msgid "Year"
-msgstr "Année"
-
-#: view.php:60
+#: view.php:75
 msgid "Y"
 msgstr ""
 
-#: view.php:61
+#: view.php:78
 msgid "Zoom In"
 msgstr "Zoom avant"
 
-#: view.php:62
+#: view.php:79
 msgid "Zoom Out"
 msgstr "Zoom arrière"
 
-#: view.php:63
+#: view.php:80
 msgid "Earlier"
 msgstr "Avant"
 
-#: view.php:64
+#: view.php:81
 msgid "Later"
 msgstr "Après"
 
-#: view.php:67 view.php:221
+#: view.php:84 view.php:227
 msgid "Show"
 msgstr "Afficher"
 
-#: view.php:68
+#: view.php:85
 msgid "missing data"
 msgstr "données manquantes"
 
-#: view.php:69
+#: view.php:86
 msgid "legend"
 msgstr "légende"
 
-#: view.php:70
+#: view.php:87
 msgid "feed tag"
 msgstr "étiquette flux"
 
-#: view.php:78 view.php:318
-msgid "Histogram"
-msgstr "Histogramme"
-
-#: view.php:79 view.php:114 view.php:181
+#: view.php:96 view.php:131 view.php:186
 msgid "Type"
 msgstr "Type"
 
-#: view.php:81
+#: view.php:98
 msgid "Time at value"
 msgstr "Temps à la valeur"
 
-#: view.php:82
+#: view.php:99
 msgid "kWh at Power"
 msgstr "kWh à la Puissance"
 
-#: view.php:84
+#: view.php:101
 msgid "Resolution"
 msgstr "Résolution"
 
-#: view.php:88
+#: view.php:105
 msgid "Back to main view"
 msgstr "Retour à la vue principale"
 
-#: view.php:98
+#: view.php:115
 msgid "Start"
 msgstr "Début"
 
-#: view.php:106
+#: view.php:123
 msgid "End"
 msgstr "Fin"
 
-#: view.php:116
+#: view.php:133
 msgid "Fixed Interval"
 msgstr "Intervalle fixe"
 
-#: view.php:117
+#: view.php:134
 msgid "Daily"
 msgstr "Quotiden"
 
-#: view.php:118
+#: view.php:135
 msgid "Weekly"
 msgstr "Hebdomadaire"
 
-#: view.php:119
+#: view.php:136
 msgid "Monthly"
 msgstr "Mensuel"
 
-#: view.php:120
+#: view.php:137
 msgid "Annual"
 msgstr "Annuel"
 
-#: view.php:128
+#: view.php:145
 msgid "Fix"
 msgstr "Réparer"
 
-#: view.php:129
+#: view.php:146
 msgid "Limit to data interval"
 msgstr "Limiter à l'intervalle de données"
 
-#: view.php:133
-msgid "Timezone"
-msgstr "Fuseau horaire"
-
-#: view.php:136
-msgid "System"
-msgstr "Système"
-
-#: view.php:140
-msgid "World Timezones"
-msgstr "Fuseau horaire Monde"
-
-#: view.php:146 view.php:154
+#: view.php:151 view.php:159
 msgid "Y-axis"
 msgstr "Axe-Y"
 
-#: view.php:146
+#: view.php:151
 msgid "Left"
 msgstr "Gauche"
 
-#: view.php:147 view.php:155
+#: view.php:152 view.php:160
 msgid "min"
 msgstr "min"
 
-#: view.php:149 view.php:157
+#: view.php:154 view.php:162
 msgid "max"
 msgstr "max"
 
-#: view.php:151 view.php:159
+#: view.php:156 view.php:164
 msgid "Reset"
 msgstr "Réinitialiser"
 
-#: view.php:154
+#: view.php:159
 msgid "Right"
 msgstr "Droite"
 
-#: view.php:162
+#: view.php:166
 msgid "Reload"
 msgstr "Recharger"
 
-#: view.php:168
+#: view.php:173
 msgid "Show options"
 msgstr "Afficher options"
 
-#: view.php:169
+#: view.php:174
 msgid "Show statistics"
 msgstr "Afficher statistiques"
 
-#: view.php:172
+#: view.php:177
 msgid "Feeds in view"
 msgstr "Flux dans la vue"
 
-#: view.php:180 view.php:196
+#: view.php:185 view.php:202
 msgid "Feed"
 msgstr "Flux"
 
-#: view.php:182
+#: view.php:187
 msgid "Color"
 msgstr "Couleur"
 
-#: view.php:183
+#: view.php:188
 msgid "Fill"
 msgstr "Remplissage"
 
-#: view.php:184
+#: view.php:189
 msgid "Stack"
 msgstr "Empilement"
 
-#: view.php:185
+#: view.php:190
 msgid "Scale"
 msgstr "Échelle"
 
-#: view.php:186
+#: view.php:191
+msgid "Offset"
+msgstr "Décalage"
+
+#: view.php:192
 msgid "Delta"
 msgstr "Delta"
 
-#: view.php:187
+#: view.php:193
 msgid "Average"
 msgstr "Moyenne"
 
-#: view.php:188
+#: view.php:194
 msgid "DP"
 msgstr ""
 
-#: view.php:197
+#: view.php:203
 msgid "Quality"
 msgstr "Qualité"
 
-#: view.php:198
+#: view.php:204
 msgid "Min"
 msgstr "Min"
 
-#: view.php:199
+#: view.php:205
 msgid "Max"
 msgstr "Max"
 
-#: view.php:200
+#: view.php:206
 msgid "Diff"
 msgstr "Différence"
 
-#: view.php:201
+#: view.php:207
 msgid "Mean"
 msgstr "Médiane"
 
-#: view.php:202
+#: view.php:208
 msgid "Stdev"
 msgstr "Écart-type"
 
-#: view.php:203
+#: view.php:209
 msgid "Wh"
 msgstr "Wh"
 
-#: view.php:212 view.php:313
-msgid "Show CSV Output"
-msgstr "Afficher sortie CSV"
-
-#: view.php:213
+#: view.php:219
 msgid "Time format"
 msgstr "Format temps"
 
-#: view.php:215
+#: view.php:221
 msgid "Unix timestamp"
 msgstr "Horodatage Unix"
 
-#: view.php:216
+#: view.php:222
 msgid "Seconds since start"
 msgstr "Secondes depuis le départ"
 
-#: view.php:217
+#: view.php:223
 msgid "Date-time string"
 msgstr "Chaîne Date-temps"
 
-#: view.php:219
+#: view.php:225
 msgid "Null values"
 msgstr "Valeurs nulles"
 
-#: view.php:222
+#: view.php:228
 msgid "Replace with last value"
 msgstr "Remplacer avec la dernière valeur"
 
-#: view.php:223
+#: view.php:229
 msgid "Remove whole line"
 msgstr "Retirer la ligne entière"
 
-#: view.php:225
+#: view.php:231
 msgid "Headers"
 msgstr "En-têtes"
 
-#: view.php:227
+#: view.php:233
 msgid "Show name and tag"
 msgstr "Afficher nom et étiquette"
 
-#: view.php:228
+#: view.php:234
 msgid "Show name"
 msgstr "Afficher nom"
 
-#: view.php:229
+#: view.php:235
 msgid "Hide"
 msgstr "Masquer"
 
-#: view.php:235
+#: view.php:240
 msgid "Download"
 msgstr "Télécharger"
 
-#: view.php:273
+#: view.php:243
 msgid "Copied"
 msgstr "Copié"
 
-#: view.php:273
+#: view.php:243
 msgid "Copy"
 msgstr "Copier"
 
-#: view.php:310
-msgid "Select a feed"
-msgstr "Sélectionner un flux"
-
-#: view.php:311
-msgid "Please select a feed from the Feeds List"
-msgstr "Sélectionner SVP un flux à partir de la liste Flux"
-
-#: view.php:312
-msgid "Select graph"
-msgstr "Sélectionner graphique"
-
-#: view.php:314
-msgid "Hide CSV Output"
-msgstr "Masquer sortie CSV"
-
-#: view.php:315
-msgid "Lines"
-msgstr "Lignes"
-
-#: view.php:316
-msgid "Bars"
-msgstr "Barres"
-
-#: view.php:317
-msgid "Points"
-msgstr "Points"
-
-#: view.php:319
-msgid "Move up"
-msgstr "Monter"
-
-#: view.php:320
-msgid "Move down"
-msgstr "Descendre"
-
-#: view.php:321
-msgid "Window"
-msgstr "Fenêtre"
-
-#: view.php:322
-msgid "Length"
-msgstr "Longueur"
-
-#: view.php:423
+#: view.php:394
 msgid "User"
 msgstr "Utilisateur"
 
-#: view.php:424
+#: view.php:395
 msgid "Browser"
 msgstr "Navigateur"
 
-#: view.php:425
+#: view.php:396
 msgid "Authentication Required"
 msgstr "Authentification requise"
 
+#~ msgid "Timezone"
+#~ msgstr "Fuseau horaire"
+
+#~ msgid "System"
+#~ msgstr "Système"
+
+#~ msgid "World Timezones"
+#~ msgstr "Fuseau horaire Monde"
+
 #~ msgid "Feeds"
 #~ msgstr "Flux"
diff --git a/view.php b/view.php
index 660dabf..28cb24d 100644
--- a/view.php
+++ b/view.php
@@ -57,7 +57,7 @@
 
     <div class="input-prepend input-append" style="margin-bottom:0 !important">
         <button class='btn graph_time_refresh' title="<?php echo _('Refresh') ?>"><i class="icon-repeat"></i></button>
-        <select class='btn graph_time' style="width:90px; padding-left:5px">
+        <select class='btn graph_time' style="width:110px; padding-left:5px">
             <option value='1'><?php echo _('1 hour') ?></option>
             <option value='6'><?php echo _('6 hours') ?></option>
             <option value='12'><?php echo _('12 hours') ?></option>