diff --git a/src/db-data-processing.ts b/src/db-data-processing.ts
index 71347ff2..1e55e231 100644
--- a/src/db-data-processing.ts
+++ b/src/db-data-processing.ts
@@ -180,6 +180,7 @@ function findMeasurements(
     if (
       mm.envId == row.envid &&
       mm.commitId == row.commitid &&
+      mm.runId == row.runid &&
       mm.criterion.name == row.criterion
     ) {
       m = mm;
diff --git a/src/stats-data-prep.ts b/src/stats-data-prep.ts
index ee5bdcb6..7ef832b3 100644
--- a/src/stats-data-prep.ts
+++ b/src/stats-data-prep.ts
@@ -177,6 +177,7 @@ function assertBasicPropertiesOfSortedMeasurements(
 
 function addOrGetCompareStatsRow(
   variants: Map<string, CompareStatsRow>,
+  countsAndMissing: VariantCountAndMissing | null,
   measurements: Measurements,
   bench: ProcessedResult
 ): CompareStatsRow {
@@ -196,17 +197,17 @@ function addOrGetCompareStatsRow(
   let row = variants.get(key);
   if (row === undefined) {
     row = {
-      benchId: { b, e, s, v, c, ea },
+      benchId: { b, e, s, v, c, i, ea },
       details: {
         cmdline: measurements.runSettings.simplifiedCmdline,
         envId,
         hasProfiles: false,
         hasWarmup: false,
-        numV: 0,
-        numC: 0,
-        numI: 0,
-        numEa: 0,
-        numEnv: 0
+        numV: countsAndMissing === null ? 0 : countsAndMissing.numV,
+        numC: countsAndMissing === null ? 0 : countsAndMissing.numC,
+        numI: countsAndMissing === null ? 0 : countsAndMissing.numI,
+        numEa: countsAndMissing === null ? 0 : countsAndMissing.numEa,
+        numEnv: countsAndMissing === null ? 0 : countsAndMissing.numEnv
       }
     };
     variants.set(key, row);
@@ -221,7 +222,7 @@ function addMissingCompareStatsRow(
   base: string,
   change: string
 ): void {
-  const row = addOrGetCompareStatsRow(variants, measurements, bench);
+  const row = addOrGetCompareStatsRow(variants, null, measurements, bench);
 
   if (!row.missing) {
     row.missing = [];
@@ -263,7 +264,7 @@ export function countVariantsAndDropMissing(
   let numC = 0;
   let numI = 0;
   let numEa = 0;
-  let numEnv = 1;
+  let numEnv = 0;
 
   function dropAsMissing(i: number): void {
     addMissingCompareStatsRow(missing, measurements[i], bench, base, change);
@@ -290,37 +291,29 @@ export function countVariantsAndDropMissing(
 
     const base = measurements[i];
 
-    if (lastEnvId === -1) {
+    if (lastEnvId !== base.envId) {
       lastEnvId = base.envId;
-      lastVarValue = base.runSettings.varValue;
-      lastCores = base.runSettings.cores;
-      lastInputSize = base.runSettings.inputSize;
-      lastExtraArgs = base.runSettings.extraArgs;
-    } else {
-      if (lastEnvId !== base.envId) {
-        lastEnvId = base.envId;
-        numEnv += 1;
-      }
+      numEnv += 1;
+    }
 
-      if (lastVarValue !== base.runSettings.varValue) {
-        lastVarValue = base.runSettings.varValue;
-        numV += 1;
-      }
+    if (lastVarValue !== base.runSettings.varValue) {
+      lastVarValue = base.runSettings.varValue;
+      numV += 1;
+    }
 
-      if (lastCores !== base.runSettings.cores) {
-        lastCores = base.runSettings.cores;
-        numC += 1;
-      }
+    if (lastCores !== base.runSettings.cores) {
+      lastCores = base.runSettings.cores;
+      numC += 1;
+    }
 
-      if (lastInputSize !== base.runSettings.inputSize) {
-        lastInputSize = base.runSettings.inputSize;
-        numI += 1;
-      }
+    if (lastInputSize !== base.runSettings.inputSize) {
+      lastInputSize = base.runSettings.inputSize;
+      numI += 1;
+    }
 
-      if (lastExtraArgs !== base.runSettings.extraArgs) {
-        lastExtraArgs = base.runSettings.extraArgs;
-        numEa += 1;
-      }
+    if (lastExtraArgs !== base.runSettings.extraArgs) {
+      lastExtraArgs = base.runSettings.extraArgs;
+      numEa += 1;
     }
 
     if (isLastItem) {
@@ -387,6 +380,7 @@ export async function calculateChangeStatsForBenchmark(
   // - calculate the change statistics for each criterion
   const counts = await computeStatisticsAndInlinePlot(
     variants,
+    countsAndMissing,
     bench,
     measurements,
     baseOffset,
@@ -443,6 +437,7 @@ export function getMsFlattenedAndSorted(
 
 async function computeStatisticsAndInlinePlot(
   variants: Map<string, CompareStatsRow>,
+  countsAndMissing: VariantCountAndMissing,
   bench: ProcessedResult,
   measurements: Measurements[],
   baseOffset: number,
@@ -462,7 +457,12 @@ async function computeStatisticsAndInlinePlot(
     const { sortedBase, sortedChange } = getMsFlattenedAndSorted(base, change);
     const changeStats = calculateChangeStatistics(sortedBase, sortedChange);
 
-    const row = addOrGetCompareStatsRow(variants, change, bench);
+    const row = addOrGetCompareStatsRow(
+      variants,
+      countsAndMissing,
+      change,
+      bench
+    );
 
     // add the various details
     row.details.hasWarmup = siteConfig.canShowWarmup(change.values);
diff --git a/src/views/compare/stats-row.html b/src/views/compare/stats-row.html
index 207712ec..966acd3e 100644
--- a/src/views/compare/stats-row.html
+++ b/src/views/compare/stats-row.html
@@ -3,10 +3,10 @@
 
 let args = '';
 
-if (stats.details.numV  > 0) { args += stats.benchId.v + ' '; }
-if (stats.details.numC  > 0) { args += stats.benchId.c + ' '; }
-if (stats.details.numI  > 0) { args += stats.benchId.i + ' '; }
-if (stats.details.numEa > 0) { args += stats.benchId.ea + ' '; }
+if (stats.details.numV  > 1) { args += stats.benchId.v + ' '; }
+if (stats.details.numC  > 1) { args += stats.benchId.c + ' '; }
+if (stats.details.numI  > 1) { args += stats.benchId.i + ' '; }
+if (stats.details.numEa > 1) { args += stats.benchId.ea + ' '; }
 
 if (args.length > 0) {
   args = `<span class="all-args">${args.trim()}</span>`;
@@ -14,7 +14,7 @@
 
 if (stats.missing) {
 %}<tr>
-%}<th scope="row">{%= stats.benchId.b %}{%= args %}</th>
+%}<th scope="row">{%= stats.benchId.b %}{%- args %}</th>
 <td colspan="4">Missing data for {%
   const byCommitId = new Map();
   for (const m of stats.missing) {
@@ -46,7 +46,7 @@
 
     if (hasTotal) {
 %}<tr>
-<th scope="row">{%= stats.benchId.b %}{%= args %}</th>
+<th scope="row">{%= stats.benchId.b %}{%- args %}</th>
   <td class="inline-cmp"><img src="{%= it.config.reportsUrl %}/{%= stats.inlinePlot %}"></td>
 {%    if (stats.exeStats) {
 %}{%-   include('compare/stats-row-across-exes.html', {
diff --git a/tests/db-data-processing.test.ts b/tests/db-data-processing.test.ts
index cb06d1c9..de522e48 100644
--- a/tests/db-data-processing.test.ts
+++ b/tests/db-data-processing.test.ts
@@ -7,7 +7,7 @@ import {
   ResultsByExeSuiteBenchmark,
   ResultsBySuiteBenchmark
 } from '../src/stats-data-prep.js';
-import { ProcessedResult } from '../src/db.js';
+import { MeasurementData, ProcessedResult } from '../src/db.js';
 
 const dataJsSOM = JSON.parse(
   readFileSync(
@@ -175,4 +175,75 @@ describe('collateMeasurements()', () => {
       expect(m2.values[0]).toHaveLength(120);
     });
   });
+
+  describe('needs to distinguish different run ids', () => {
+    function createMeasure(
+      runid: number,
+      inputsize: string,
+      commitid: string
+    ): MeasurementData {
+      return {
+        expid: 1,
+        runid,
+        trialid: 1,
+        commitid,
+
+        bench: 'b',
+        exe: 'e',
+        suite: 's',
+
+        cmdline: 'b e s ' + inputsize,
+        varvalue: null,
+        cores: null,
+        inputsize,
+        extraargs: null,
+
+        iteration: 1,
+        invocation: 1,
+        warmup: null,
+
+        criterion: 'total',
+        unit: 'ms',
+        value: 1,
+
+        envid: 1
+      };
+    }
+
+    const data: MeasurementData[] = [
+      createMeasure(1, '1', 'a'),
+      createMeasure(1, '1', 'b'),
+      createMeasure(2, '2', 'a'),
+      createMeasure(2, '2', 'b')
+    ];
+
+    const result: ResultsByExeSuiteBenchmark = collateMeasurements(data);
+
+    it('should have 1 executor', () => {
+      expect(result.size).toBe(1);
+      expect([...result.keys()]).toEqual(['e']);
+    });
+
+    it('should have 1 suite', () => {
+      const suites = <ResultsBySuiteBenchmark>result.get('e');
+      expect(suites.size).toBe(1);
+      expect([...suites.keys()]).toEqual(['s']);
+    });
+
+    it('should have the expected benchmark', () => {
+      const suites = <ResultsBySuiteBenchmark>result.get('e');
+      const bs = <ResultsByBenchmark>suites.get('s');
+      expect(bs.benchmarks.size).toBe(1);
+
+      expect([...bs.benchmarks.keys()]).toEqual(['b']);
+    });
+
+    it('should have 4 measurements', () => {
+      const suites = <ResultsBySuiteBenchmark>result.get('e');
+      const bs = <ResultsByBenchmark>suites.get('s');
+      const b = <ProcessedResult>bs.benchmarks.get('b');
+
+      expect(b.measurements).toHaveLength(4);
+    });
+  });
 });
diff --git a/tests/stats-data-prep.test.ts b/tests/stats-data-prep.test.ts
index dac8fba8..90777068 100644
--- a/tests/stats-data-prep.test.ts
+++ b/tests/stats-data-prep.test.ts
@@ -358,6 +358,16 @@ describe('calculateChangeStatsForBenchmark()', () => {
     it('should not have dropped any data', () => {
       expect(nbody.measurements).toHaveLength(2);
       expect(stats.stats).toHaveLength(1);
+
+      for (const propName of ['b', 'e', 's', 'v', 'c', 'i', 'ea']) {
+        expect(stats.stats[0].benchId).toHaveProperty(propName);
+      }
+
+      expect(stats.stats[0].details.numV).toBe(0);
+      expect(stats.stats[0].details.numC).toBe(1);
+      expect(stats.stats[0].details.numI).toBe(0);
+      expect(stats.stats[0].details.numEa).toBe(1);
+      expect(stats.stats[0].details.numEnv).toBe(1);
     });
 
     it('should have added the expected statistics', () => {