diff --git a/assets/app.js b/assets/app.js
index 52a290f..782e2a7 100644
--- a/assets/app.js
+++ b/assets/app.js
@@ -29,96 +29,6 @@ window.getLabourerUrl = getLabourerUrl;
 
 Chart.register(ChartDataLabels);
 
-function initDashboardChart() {
-    const chartCanvas = document.getElementById('statsBubbleChart');
-    if (!chartCanvas) {
-        return;
-    }
-
-    if (!chartCanvas.dataset.stats || chartCanvas.dataset.stats.length <= 2) { // <= 2 pour ignorer '[]'
-        console.log("Les données du graphique sont vides ou absentes, le graphique ne sera pas affiché.");
-        return;
-    }
-
-    const statsData = JSON.parse(chartCanvas.dataset.stats);
-
-    if (statsData && statsData.length > 0) {
-        const bubbleChartData = statsData.map(stat => {
-            const population = parseInt(stat.population, 10);
-            const placesCount = parseInt(stat.placesCount, 10);
-            const ratio = population > 0 ? (placesCount / population) * 1000 : 0;
-            
-            return {
-                x: population,
-                y: ratio,
-                r: Math.sqrt(placesCount) * 2,
-                label: stat.name,
-                completion: stat.completionPercent || 0
-            };
-        });
-
-        new Chart(chartCanvas.getContext('2d'), {
-            type: 'bubble',
-            data: {
-                datasets: [{
-                    label: 'Villes',
-                    data: bubbleChartData,
-                    backgroundColor: bubbleChartData.map(d => `rgba(255, 99, 132, ${d.completion / 100})`),
-                    borderColor: 'rgba(255, 99, 132, 1)',
-                }]
-            },
-            options: {
-                responsive: true,
-                plugins: {
-                    datalabels: {
-                        anchor: 'center',
-                        align: 'center',
-                        color: '#000',
-                        font: {
-                            weight: 'bold'
-                        },
-                        formatter: (value, context) => {
-                            return context.dataset.data[context.dataIndex].label;
-                        }
-                    },
-                    legend: {
-                        display: false
-                    },
-                    tooltip: {
-                        callbacks: {
-                            label: (context) => {
-                                const d = context.raw;
-                                return [
-                                    `${d.label}`,
-                                    `Population: ${d.x.toLocaleString()}`,
-                                    `Lieux / 1000 hab: ${d.y.toFixed(2)}`,
-                                    `Total lieux: ${Math.round(Math.pow(d.r / 2, 2))}`,
-                                    `Complétion: ${d.completion}%`
-                                ];
-                            }
-                        }
-                    }
-                },
-                scales: {
-                    x: {
-                        type: 'logarithmic',
-                        title: {
-                            display: true,
-                            text: 'Population (échelle log)'
-                        }
-                    },
-                    y: {
-                        title: {
-                            display: true,
-                            text: 'Commerces pour 1000 habitants'
-                        }
-                    }
-                }
-            }
-        });
-    }
-}
-
 // Attendre le chargement du DOM
 document.addEventListener('DOMContentLoaded', () => {
   console.log('DOMContentLoaded');
@@ -266,8 +176,7 @@ document.addEventListener('DOMContentLoaded', () => {
     });
   }
 
-  enableLabourageForm();
-  initDashboardChart();
-
+  enableLabourageForm(); 
   adjustListGroupFontSize('.list-group-item');
 });
+ 
diff --git a/src/Controller/PublicController.php b/src/Controller/PublicController.php
index cb89a3c..09c8ed3 100644
--- a/src/Controller/PublicController.php
+++ b/src/Controller/PublicController.php
@@ -183,6 +183,8 @@ class PublicController extends AbstractController
                     'placesCount' => $stat->getPlacesCount(),
                     'completionPercent' => $stat->getCompletionPercent(),
                     'population' => $stat->getPopulation(),
+                    'zone' => $stat->getZone(),
+                    'osmDataDateAvg' => $stat->getOsmDataDateAvg() ? $stat->getOsmDataDateAvg()->format('Y-m-d') : null,
                 ];
             }
         }
diff --git a/templates/admin/stats.html.twig b/templates/admin/stats.html.twig
index f987e83..1a9cd17 100644
--- a/templates/admin/stats.html.twig
+++ b/templates/admin/stats.html.twig
@@ -632,7 +632,7 @@ function getCompletionColor(completion) {
   if (completion.percentage < 100) {
     content += `
             <div class="alert alert-warning mt-2">
-                <h6>Informations manquantes :</h6>
+                <h6>Infos manquantes :</h6>
                 <ul class="list-unstyled mb-0">
                     ${completion.missingFields.map(field => `<li><i class="bi bi-x-circle text-danger"></i> ${field}</li>`).join('')}
                 </ul>
diff --git a/templates/admin/stats/row.html.twig b/templates/admin/stats/row.html.twig
index 7774e71..136dc24 100644
--- a/templates/admin/stats/row.html.twig
+++ b/templates/admin/stats/row.html.twig
@@ -23,7 +23,7 @@
                             data-bs-html="true"
                             data-bs-content="
                                 <div class='p-2'>
-                                    <h6>Informations manquantes :</h6>
+                                    <h6>Infos manquantes :</h6>
                                     <ul class='list-unstyled mb-0'>
                                         {% if not commerce.name %}
                                             <li><i class='bi bi-x-circle text-danger'></i> Nom du commerce</li>
diff --git a/templates/public/dashboard.html.twig b/templates/public/dashboard.html.twig
index 366d51b..dd6eea2 100644
--- a/templates/public/dashboard.html.twig
+++ b/templates/public/dashboard.html.twig
@@ -68,6 +68,20 @@
                 <div class="card-body">
                     <canvas id="statsBubbleChart" style="min-height: 400px; width: 100%;" data-stats="{{ stats|raw }}"></canvas>
                 </div>
+                <pre>
+            </div>
+        </div>
+    </div>
+
+    <div class="row mb-4">
+        <div class="col-12">
+            <div class="card">
+                <div class="card-header">
+                    Fraîcheur des données OSM (âge moyen par trimestre)
+                </div>
+                <div class="card-body">
+                    <canvas id="freshnessHistogram" style="min-height: 300px; width: 100%;"></canvas>
+                </div>
             </div>
         </div>
     </div>
@@ -160,5 +174,230 @@
 
 {% block javascripts %}
     {{ parent() }}
-    {# Le script du graphique est maintenant dans assets/app.js #}
+    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2"></script>
+    <script>
+    document.addEventListener('DOMContentLoaded', function() {
+        const chartCanvas = document.getElementById('statsBubbleChart');
+        if (!chartCanvas) {
+            console.warn('Canvas #statsBubbleChart introuvable');
+            return;
+        }
+        const statsData = {{ stats|raw }};
+        console.log('statsData', statsData);
+        
+        if (!statsData || statsData.length === 0) {
+            chartCanvas.parentNode.innerHTML += '<div class="text-muted p-3">Aucune donnée de statistiques à afficher pour le graphique.</div>';
+            return;
+        }
+        const bubbleChartData = statsData.map(stat => {
+            const population = parseInt(stat.population, 10);
+            const placesCount = parseInt(stat.placesCount, 10);
+            const ratio = population > 0 ? (placesCount / population) * 1000 : 0;
+            return {
+                x: population,
+                y: ratio,
+                r: Math.sqrt(placesCount) * 2,
+                label: stat.name,
+                completion: stat.completionPercent || 0
+            };
+        });
+        // Calcul de la régression linéaire (moindres carrés)
+        const validPoints = bubbleChartData.filter(d => d.x > 0 && d.y > 0);
+        const n = validPoints.length;
+        let regressionLine = null, slope = 0, intercept = 0;
+        if (n >= 2) {
+            let sumX = 0, sumY = 0, sumXY = 0, sumXX = 0;
+            validPoints.forEach(d => {
+                sumX += Math.log10(d.x);
+                sumY += d.y;
+                sumXY += Math.log10(d.x) * d.y;
+                sumXX += Math.log10(d.x) * Math.log10(d.x);
+            });
+            const meanX = sumX / n;
+            const meanY = sumY / n;
+            slope = (sumXY - n * meanX * meanY) / (sumXX - n * meanX * meanX);
+            intercept = meanY - slope * meanX;
+            const xMin = Math.min(...validPoints.map(d => d.x));
+            const xMax = Math.max(...validPoints.map(d => d.x));
+            regressionLine = [
+                { x: xMin, y: slope * Math.log10(xMin) + intercept },
+                { x: xMax, y: slope * Math.log10(xMax) + intercept }
+            ];
+        }
+        Chart.register(window.ChartDataLabels);
+        const bubbleChart = new Chart(chartCanvas.getContext('2d'), {
+            type: 'bubble',
+            data: {
+                datasets: [
+                    {
+                        label: 'Villes',
+                        data: bubbleChartData,
+                        backgroundColor: bubbleChartData.map(d => `rgba(255, 99, 132, ${d.completion / 100})`),
+                        borderColor: 'rgba(255, 99, 132, 1)',
+                    },
+                    // regressionLine ? {
+                    //     label: 'Régression linéaire',
+                    //     type: 'line',
+                    //     data: regressionLine,
+                    //     borderColor: 'rgba(0, 0, 0, 0.7)',
+                    //     borderWidth: 2,
+                    //     pointRadius: 0,
+                    //     fill: false,
+                    //     order: 0,
+                    //     tension: 0
+                    // } : null
+                ].filter(Boolean)
+            },
+            options: {
+                responsive: true,
+                plugins: {
+                    datalabels: {
+                        anchor: 'center',
+                        align: 'center',
+                        color: '#000',
+                        font: {
+                            weight: 'bold'
+                        },
+                        formatter: (value, context) => {
+                            return context.dataset.data[context.dataIndex].label;
+                        }
+                    },
+                    legend: {
+                        display: true
+                    },
+                    tooltip: {
+                        callbacks: {
+                            label: (context) => {
+                                const d = context.raw;
+                                if (context.dataset.type === 'line') {
+                                    return `Régression: y = ${slope.toFixed(2)} × log10(x) + ${intercept.toFixed(2)}`;
+                                }
+                                return [
+                                    `${d.label}`,
+                                    `Population: ${d.x.toLocaleString()}`,
+                                    `Lieux / 1000 hab: ${d.y.toFixed(2)}`,
+                                    `Total lieux: ${Math.round(Math.pow(d.r / 2, 2))}`,
+                                    `Complétion: ${d.completion}%`
+                                ];
+                            }
+                        }
+                    }
+                },
+                scales: {
+                    x: {
+                        type: 'logarithmic',
+                        title: {
+                            display: true,
+                            text: 'Population (échelle log)'
+                        }
+                    },
+                    y: {
+                        title: {
+                            display: true,
+                            text: 'Commerces pour 1000 habitants'
+                        }
+                    }
+                }
+            }
+        });
+        // Ajout du clic sur une bulle
+        chartCanvas.onclick = function(evt) {
+            const points = bubbleChart.getElementsAtEventForMode(evt, 'nearest', { intersect: true }, true);
+            if (points.length > 0) {
+                const firstPoint = points[0];
+                const dataIndex = firstPoint.index;
+                const stat = statsData[dataIndex];
+                if (stat && stat.zone) {
+                    window.location.href = '/admin/stats/' + stat.zone;
+                }
+            }
+        };
+        // HISTOGRAMME FRAÎCHEUR
+        const freshnessCanvas = document.getElementById('freshnessHistogram');
+        if (freshnessCanvas) {
+            // Regrouper les villes par trimestre d'âge moyen OSM
+            const statsData = {{ stats|raw }};
+            const quarterCounts = {};
+            const quarterCities = {};
+            statsData.forEach(stat => {
+                if (!stat.osmDataDateAvg) return;
+                const date = new Date(stat.osmDataDateAvg);
+                if (isNaN(date)) return;
+                const year = date.getFullYear();
+                const month = date.getMonth(); // 0-11
+                const quarter = Math.floor(month / 3) + 1;
+                const key = `${year}-T${quarter}`;
+                if (!quarterCounts[key]) quarterCounts[key] = 0;
+                if (!quarterCities[key]) quarterCities[key] = [];
+                quarterCounts[key]++;
+                quarterCities[key].push(stat.name);
+            });
+            // Ordonner les trimestres
+            const sortedKeys = Object.keys(quarterCounts).sort();
+            const data = sortedKeys.map(k => quarterCounts[k]);
+            const labels = sortedKeys;
+            const citiesPerQuarter = sortedKeys.map(k => quarterCities[k]);
+            new Chart(freshnessCanvas.getContext('2d'), {
+                type: 'bar',
+                data: {
+                    labels: labels,
+                    datasets: [{
+                        label: 'Nombre de villes',
+                        data: data,
+                        backgroundColor: 'rgba(54, 162, 235, 0.7)',
+                        borderColor: 'rgba(54, 162, 235, 1)',
+                        borderWidth: 1,
+                        datalabels: {
+                            anchor: 'end',
+                            align: 'end',
+                            color: '#333',
+                            font: { weight: 'bold', size: 10 },
+                            formatter: function(value, context) {
+                                const idx = context.dataIndex;
+                                const villes = citiesPerQuarter[idx] || [];
+                                if (villes.length === 0) return '';
+                                let txt = villes.slice(0, 5).join(', ');
+                                if (villes.length > 5) txt += ', ...';
+                                return txt;
+                            }
+                        }
+                    }]
+                },
+                options: {
+                    responsive: true,
+                    plugins: {
+                        legend: { display: false },
+                        tooltip: {
+                            callbacks: {
+                                label: function(ctx) {
+                                    const idx = ctx.dataIndex;
+                                    const villes = citiesPerQuarter[idx] || [];
+                                    let label = `Villes : ${ctx.parsed.y}`;
+                                    if (villes.length > 0) {
+                                        label += '\n' + villes.join(', ');
+                                    }
+                                    return label;
+                                }
+                            }
+                        },
+                        datalabels: {
+                            display: true
+                        }
+                    },
+                    scales: {
+                        x: {
+                            title: { display: true, text: 'Trimestre de l\'âge moyen OSM' }
+                        },
+                        y: {
+                            beginAtZero: true,
+                            title: { display: true, text: 'Nombre de villes' }
+                        }
+                    }
+                },
+                plugins: [ChartDataLabels]
+            });
+        }
+    });
+    </script>
 {% endblock %}
\ No newline at end of file