diff --git a/internal/cli/run/run.go b/internal/cli/run/run.go
index 2de0c9d..10f71e3 100644
--- a/internal/cli/run/run.go
+++ b/internal/cli/run/run.go
@@ -44,12 +44,12 @@ func init() {
 					time.Now().UTC().Format(time.RFC3339Nano)))
 
 			ctl := nettests.NewController(nt, ctx, result, msmtPath)
-			if err := nt.Run(ctl); err != nil {
+			if err = nt.Run(ctl); err != nil {
 				log.WithError(err).Errorf("Failed to run %s", group.Label)
 				return err
 			}
 		}
-		if err = result.Finished(ctx.DB); err != nil {
+		if err = result.Finished(ctx.DB, group.Summary); err != nil {
 			return err
 		}
 		return nil
diff --git a/internal/database/models.go b/internal/database/models.go
index 01d44cf..258b4b1 100644
--- a/internal/database/models.go
+++ b/internal/database/models.go
@@ -12,6 +12,12 @@ import (
 	"github.com/pkg/errors"
 )
 
+// ResultSummaryFunc is the function used to generate result summaries
+type ResultSummaryFunc func(SummaryMap) (string, error)
+
+// SummaryMap contains a mapping from test name to serialized summary for it
+type SummaryMap map[string]string
+
 // UpdateOne will run the specified update query and check that it only affected one row
 func UpdateOne(db *sqlx.DB, query string, arg interface{}) error {
 	res, err := db.NamedExec(query, arg)
@@ -187,17 +193,43 @@ type Result struct {
 	MeasurementDir string    `db:"measurement_dir"`
 }
 
+// MakeSummaryMap return a mapping of test names to summaries for the given
+// result
+func MakeSummaryMap(db *sqlx.DB, r *Result) (SummaryMap, error) {
+	summaryMap := SummaryMap{}
+
+	msmts := []Measurement{}
+	// XXX maybe we only want to select some of the columns
+	err := db.Select(&msmts, "SELECT name, summary FROM measurements WHERE result_id = $1", r.ID)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get measurements")
+	}
+	for _, msmt := range msmts {
+		summaryMap[msmt.Name] = msmt.Summary
+	}
+	return summaryMap, nil
+}
+
 // Finished marks the result as done and sets the runtime
-func (r *Result) Finished(db *sqlx.DB) error {
+func (r *Result) Finished(db *sqlx.DB, makeSummary ResultSummaryFunc) error {
 	if r.Done == true || r.Runtime != 0 {
 		return errors.New("Result is already finished")
 	}
 	r.Runtime = time.Now().UTC().Sub(r.StartTime).Seconds()
 	r.Done = true
 	// XXX add in here functionality to compute the summary
+	summaryMap, err := MakeSummaryMap(db, r)
+	if err != nil {
+		return err
+	}
 
-	err := UpdateOne(db, `UPDATE results
-		SET done = :done, runtime = :runtime
+	r.Summary, err = makeSummary(summaryMap)
+	if err != nil {
+		return err
+	}
+
+	err = UpdateOne(db, `UPDATE results
+		SET done = :done, runtime = :runtime, summary = :summary
 		WHERE id = :id`, r)
 	if err != nil {
 		return errors.Wrap(err, "updating finished result")
diff --git a/nettests/groups/groups.go b/nettests/groups/groups.go
index e10b6b2..5cc5861 100644
--- a/nettests/groups/groups.go
+++ b/nettests/groups/groups.go
@@ -1,6 +1,10 @@
 package groups
 
 import (
+	"encoding/json"
+
+	"github.com/apex/log"
+	"github.com/openobservatory/gooni/internal/database"
 	"github.com/openobservatory/gooni/nettests"
 	"github.com/openobservatory/gooni/nettests/performance"
 	"github.com/openobservatory/gooni/nettests/websites"
@@ -10,7 +14,15 @@ import (
 type NettestGroup struct {
 	Label    string
 	Nettests []nettests.Nettest
-	Summary  func(s string) string
+	Summary  database.ResultSummaryFunc
+}
+
+// PerformanceSummary is the result summary for a performance test
+type PerformanceSummary struct {
+	Upload   int64
+	Download int64
+	Ping     float64
+	Bitrate  int64
 }
 
 // NettestGroups that can be run by the user
@@ -20,8 +32,8 @@ var NettestGroups = map[string]NettestGroup{
 		Nettests: []nettests.Nettest{
 			websites.WebConnectivity{},
 		},
-		Summary: func(s string) string {
-			return "{}"
+		Summary: func(m database.SummaryMap) (string, error) {
+			return "{}", nil
 		},
 	},
 	"performance": NettestGroup{
@@ -30,22 +42,46 @@ var NettestGroups = map[string]NettestGroup{
 			performance.Dash{},
 			performance.NDT{},
 		},
-		Summary: func(s string) string {
-			return "{}"
+		Summary: func(m database.SummaryMap) (string, error) {
+			var (
+				err         error
+				ndtSummary  performance.NDTSummary
+				dashSummary performance.DashSummary
+				summary     PerformanceSummary
+			)
+			err = json.Unmarshal([]byte(m["Dash"]), &dashSummary)
+			if err != nil {
+				log.WithError(err).Error("failed to unmarshal Dash summary")
+				return "", err
+			}
+			err = json.Unmarshal([]byte(m["Ndt"]), &ndtSummary)
+			if err != nil {
+				log.WithError(err).Error("failed to unmarshal Dash summary")
+				return "", err
+			}
+			summary.Bitrate = dashSummary.Bitrate
+			summary.Download = ndtSummary.Download
+			summary.Upload = ndtSummary.Upload
+			summary.Ping = ndtSummary.AvgRTT
+			summaryBytes, err := json.Marshal(summary)
+			if err != nil {
+				return "", err
+			}
+			return string(summaryBytes), nil
 		},
 	},
 	"middleboxes": NettestGroup{
 		Label:    "Middleboxes",
 		Nettests: []nettests.Nettest{},
-		Summary: func(s string) string {
-			return "{}"
+		Summary: func(m database.SummaryMap) (string, error) {
+			return "{}", nil
 		},
 	},
 	"im": NettestGroup{
 		Label:    "Instant Messaging",
 		Nettests: []nettests.Nettest{},
-		Summary: func(s string) string {
-			return "{}"
+		Summary: func(m database.SummaryMap) (string, error) {
+			return "{}", nil
 		},
 	},
 }
diff --git a/nettests/performance/ndt.go b/nettests/performance/ndt.go
index 0a53f77..4c8159d 100644
--- a/nettests/performance/ndt.go
+++ b/nettests/performance/ndt.go
@@ -21,9 +21,9 @@ type NDTSummary struct {
 	Upload     int64
 	Download   int64
 	Ping       int64
-	MaxRTT     int64
-	AvgRTT     int64
-	MinRTT     int64
+	MaxRTT     float64
+	AvgRTT     float64
+	MinRTT     float64
 	MSS        int64
 	OutOfOrder int64
 	PacketLoss float64
@@ -39,9 +39,9 @@ func (n NDT) Summary(tk map[string]interface{}) interface{} {
 		Upload:     int64(simple["upload"].(float64)),
 		Download:   int64(simple["download"].(float64)),
 		Ping:       int64(simple["ping"].(float64)),
-		MaxRTT:     int64(advanced["max_rtt"].(float64)),
-		AvgRTT:     int64(advanced["avg_rtt"].(float64)),
-		MinRTT:     int64(advanced["min_rtt"].(float64)),
+		MaxRTT:     advanced["max_rtt"].(float64),
+		AvgRTT:     advanced["avg_rtt"].(float64),
+		MinRTT:     advanced["min_rtt"].(float64),
 		MSS:        int64(advanced["mss"].(float64)),
 		OutOfOrder: int64(advanced["out_of_order"].(float64)),
 		PacketLoss: advanced["packet_loss"].(float64),