diff --git a/internal/db/getters.go b/internal/db/getters.go
index 6112e25..79dc9d5 100644
--- a/internal/db/getters.go
+++ b/internal/db/getters.go
@@ -16,20 +16,20 @@ type Datum struct {
 // GetValues queries the database for values in a given time range.
 // A value is a specific data point. For example, bms_measurement.current
 // would be a value.
-func (tdb *TelemDb) GetValues(ctx context.Context, packetName, field string , start time.Time,
+func (tdb *TelemDb) GetValues(ctx context.Context, packetName, field string, start time.Time,
 	end time.Time) ([]Datum, error) {
 	// this fragment uses json_extract from sqlite to get a single
 	// nested value.
 	const SqlFrag = `
 	SELECT 
 	datetime(ts /1000.0, 'unixepoch', 'subsec') as timestamp,
-	json_extract(data, ?) as val
-	FROM bus_events WHERE name IS ?;
+	json_extract(data, '$.' || ?) as val
+	FROM bus_events WHERE name IS ? AND timestamp IS NOT NULL
 	`
+	fmt.Print(start, end, packetName, field)
 
-	rows, err := tdb.db.QueryxContext(ctx, "'$.current'", packetName)
+	rows, err := tdb.db.QueryxContext(ctx, SqlFrag, field, packetName, start, end)
 	if err != nil {
-		fmt.Print(err)
 		return nil, err
 	}
 	defer rows.Close()
@@ -38,11 +38,12 @@ func (tdb *TelemDb) GetValues(ctx context.Context, packetName, field string , st
 		var d Datum
 		err = rows.StructScan(&d)
 		if err != nil {
+			fmt.Print(err)
 			return data, err
 		}
 		data = append(data, d)
 	}
+	fmt.Print(data)
 
 	return data, nil
 }
-