diff --git a/lib/www/client/source/src/components/group-comparison-summary.vue b/lib/www/client/source/src/components/group-comparison-summary.vue
new file mode 100644
index 0000000..80649c0
--- /dev/null
+++ b/lib/www/client/source/src/components/group-comparison-summary.vue
@@ -0,0 +1,160 @@
+<template>
+  <v-card v-if="comparison" class="ma-1">
+    <v-card-title>Comparison Summary: Baseline {{ baseline.pid }} vs Monitor {{ monitor.pid }}</v-card-title>
+    <v-card-text>
+      <v-row>
+        <v-col cols="12" md="6">
+          <h3>Deviation Statistics</h3>
+          <v-simple-table dense>
+            <template v-slot:default>
+              <thead>
+                <tr>
+                  <th>Metric</th>
+                  <th>X (m)</th>
+                  <th>Y (m)</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr>
+                  <td>Mean (μ)</td>
+                  <td>{{ comparison['μ'][0].toFixed(3) }}</td>
+                  <td>{{ comparison['μ'][1].toFixed(3) }}</td>
+                </tr>
+                <tr>
+                  <td>Std Dev (σ)</td>
+                  <td>{{ comparison['σ'][0].toFixed(3) }}</td>
+                  <td>{{ comparison['σ'][1].toFixed(3) }}</td>
+                </tr>
+                <tr>
+                  <td>RMS</td>
+                  <td>{{ comparison.rms[0].toFixed(3) }}</td>
+                  <td>{{ comparison.rms[1].toFixed(3) }}</td>
+                </tr>
+              </tbody>
+            </template>
+          </v-simple-table>
+
+          <h3 class="mt-4">Counts</h3>
+          <ul>
+            <li>Common Points: {{ comparison.common }}</li>
+            <li>Comparison Length: {{ comparison.length }}</li>
+            <li>Baseline Length: {{ comparison.baselineLength }} (Unique: {{ comparison.baselineUniqueLength }})</li>
+            <li>Monitor Length: {{ comparison.monitorLength }} (Unique: {{ comparison.monitorUniqueLength }})</li>
+            <li>Compared Points: {{ comparison.compared }}</li>
+          </ul>
+
+          <h3 class="mt-4">Other Metrics</h3>
+          <ul>
+            <li>Anisotropy: {{ comparison.anisotropy.toFixed(2) }}</li>
+            <li title="Relative to I-axis positive direction">Primary Direction: {{ (comparison.primaryDirection * 180 / Math.PI).toFixed(2) }}°</li>
+            <li>Timestamp: {{ new Date(comparison.tstamp).toLocaleString() }}</li>
+          </ul>
+        </v-col>
+
+        <v-col cols="12" md="6">
+          <h3>Error Ellipse</h3>
+          <svg width="300" height="300" style="border: 1px solid #ccc;">
+            <g :transform="`translate(150, 150) scale(${ellipseScale})`">
+              <line x1="0" y1="-150" x2="0" y2="150" stroke="lightgray" stroke-dasharray="5,5"/>
+              <line x1="-150" y1="0" x2="150" y2="0" stroke="lightgray" stroke-dasharray="5,5"/>
+              <ellipse
+                :rx="Math.sqrt(comparison.eigenvalues[0])"
+                :ry="Math.sqrt(comparison.eigenvalues[1])"
+                :transform="`rotate(${ellipseAngle})`"
+                fill="none"
+                stroke="blue"
+                stroke-width="2"
+              />
+              <line
+                :x1="0"
+                :y1="0"
+                :x2="Math.sqrt(comparison.eigenvalues[0]) * Math.cos(ellipseRad)"
+                :y2="Math.sqrt(comparison.eigenvalues[0]) * Math.sin(ellipseRad)"
+                stroke="red"
+                stroke-width="2"
+                arrow-end="classic-wide-long"
+              />
+              <line
+                :x1="0"
+                :y1="0"
+                :x2="Math.sqrt(comparison.eigenvalues[1]) * Math.cos(ellipseRad + Math.PI / 2)"
+                :y2="Math.sqrt(comparison.eigenvalues[1]) * Math.sin(ellipseRad + Math.PI / 2)"
+                stroke="green"
+                stroke-width="2"
+                arrow-end="classic-wide-long"
+              />
+            </g>
+          </svg>
+          <p class="text-caption">Ellipse scaled for visibility (factor: {{ ellipseScale.toFixed(1) }}). Axes represent sqrt(eigenvalues).</p>
+        </v-col>
+      </v-row>
+    </v-card-text>
+  </v-card>
+</template>
+
+<script>
+export default {
+  name: "DougalGroupComparisonSummary",
+
+  props: {
+    baseline: { type: Object, required: true },
+    monitor: { type: Object, required: true },
+    comparison: { type: Object, required: true }
+  },
+
+  data () {
+    return {
+    };
+  },
+
+  computed: {
+
+    ellipseAngle () {
+      if (!this.comparison) return 0;
+      const ev = this.comparison.eigenvectors[0];
+      return Math.atan2(ev[1], ev[0]) * 180 / Math.PI;
+    },
+
+    ellipseRad () {
+      return this.ellipseAngle * Math.PI / 180;
+    },
+
+    ellipseRx () {
+      if (!this.comparison) return 0;
+      return Math.sqrt(this.comparison.eigenvalues[0]) * this.ellipseScale;
+    },
+
+    ellipseRy () {
+      if (!this.comparison) return 0;
+      return Math.sqrt(this.comparison.eigenvalues[1]) * this.ellipseScale;
+    },
+
+    ellipseScale () {
+      if (!this.comparison) return 1;
+      const maxSigma = Math.max(
+        Math.sqrt(this.comparison.eigenvalues[0]),
+        Math.sqrt(this.comparison.eigenvalues[1])
+      );
+      const maxMu = Math.max(
+        Math.abs(this.comparison['μ'][0]),
+        Math.abs(this.comparison['μ'][1])
+      );
+      const maxExtent = maxMu + 3 * maxSigma;
+      return 100 / maxExtent; // Adjust scale to fit within ~200 pixels diameter
+    },
+
+    meanX () {
+      return this.comparison ? this.comparison['μ'][0] : 0;
+    },
+
+    meanY () {
+      return this.comparison ? this.comparison['μ'][1] : 0;
+    },
+
+    ellipseViewBox () {
+      return '-150 -150 300 300';
+    },
+
+  }
+}
+</script>
diff --git a/lib/www/client/source/src/components/group-repeatability-summary.vue b/lib/www/client/source/src/components/group-repeatability-summary.vue
new file mode 100644
index 0000000..0dbe702
--- /dev/null
+++ b/lib/www/client/source/src/components/group-repeatability-summary.vue
@@ -0,0 +1,105 @@
+<template>
+  <v-card class="ma-1">
+    <v-card-title>Group Repeatability Summary</v-card-title>
+    <v-card-text>
+      <p>Inline standard deviation (σ_x) for each baseline-monitor pair. Lower values indicate better repeatability. Colors range from green (best) to red (worst).</p>
+      <v-simple-table dense>
+        <thead>
+          <tr>
+            <th>Baseline \ Monitor</th>
+            <th v-for="project in projects" :key="project.pid">{{ project.pid }}</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="(baselineProject, rowIndex) in projects" :key="baselineProject.pid">
+            <td>{{ baselineProject.pid }}</td>
+            <td v-for="(monitorProject, colIndex) in projects" :key="monitorProject.pid">
+              <v-tooltip v-if="colIndex > rowIndex" top>
+                <template v-slot:activator="{ on, attrs }">
+                  <div
+                    :style="{ backgroundColor: getSigmaXColor(baselineProject.pid, monitorProject.pid), color: 'white', textAlign: 'center', padding: '4px' }"
+                    v-bind="attrs"
+                    v-on="on"
+                    @click="emitInput(baselineProject, monitorProject)"
+                  >
+                    {{ formatSigmaX(baselineProject.pid, monitorProject.pid) }}
+                  </div>
+                </template>
+                <span v-if="getComp(baselineProject.pid, monitorProject.pid)">
+                  <div>σ_x: {{ getComp(baselineProject.pid, monitorProject.pid).meta['σ'][0].toFixed(2) }} m</div>
+                  <div>σ_y: {{ getComp(baselineProject.pid, monitorProject.pid).meta['σ'][1].toFixed(2) }} m</div>
+                  <div>Anisotropy: {{ getComp(baselineProject.pid, monitorProject.pid).meta.anisotropy.toFixed(0) }}</div>
+                  <div>Primary Direction: {{ formatPrimaryDirection(getComp(baselineProject.pid, monitorProject.pid)) }}°</div>
+                </span>
+              </v-tooltip>
+            </td>
+          </tr>
+        </tbody>
+      </v-simple-table>
+    </v-card-text>
+  </v-card>
+</template>
+
+<script>
+export default {
+  name: 'DougalGroupRepeatabilitySummary',
+
+  props: {
+    comparisons: {
+      type: Array,
+      required: true
+    },
+    projects: {
+      type: Array,
+      required: true
+    }
+  },
+
+  data () {
+    return {
+    };
+  },
+
+  computed: {
+    compMap () {
+      return new Map(this.comparisons.map(c => [`${c.baseline_pid}-${c.monitor_pid}`, c]));
+    },
+    minSigmaX () {
+      if (!this.comparisons.length) return 0;
+      return Math.min(...this.comparisons.map(c => c.meta['σ'][0]));
+    },
+    maxSigmaX () {
+      if (!this.comparisons.length) return 0;
+      return Math.max(...this.comparisons.map(c => c.meta['σ'][0]));
+    }
+  },
+  methods: {
+    getComp (basePid, monPid) {
+      return this.compMap.get(`${basePid}-${monPid}`);
+    },
+    getSigmaX (basePid, monPid) {
+      return this.getComp(basePid, monPid)?.meta?.['σ']?.[0] ?? null;
+    },
+    formatSigmaX (basePid, monPid) {
+      const val = this.getSigmaX(basePid, monPid);
+      return val !== null ? val.toFixed(1) : '';
+    },
+    getSigmaXColor (basePid, monPid) {
+      const val = this.getSigmaX(basePid, monPid);
+      if (val === null) return '';
+      const ratio = (val - this.minSigmaX) / (this.maxSigmaX - this.minSigmaX);
+      const hue = (1 - ratio) * 120;
+      return `hsl(${hue}, 70%, 70%)`;
+    },
+    formatPrimaryDirection (comp) {
+      if (!comp) return '';
+      return (comp.meta.primaryDirection * 180 / Math.PI).toFixed(1);
+    },
+    emitInput (baselineProject, monitorProject) {
+      if (this.getComp(baselineProject.pid, monitorProject.pid)) {
+        this.$emit('input', baselineProject, monitorProject);
+      }
+    }
+  }
+}
+</script>