diff --git a/database/influxdb/stats_test.go b/database/influxdb/stats_test.go
index 946c134..31d5fb4 100644
--- a/database/influxdb/stats_test.go
+++ b/database/influxdb/stats_test.go
@@ -10,13 +10,13 @@ import (
 )
 
 func TestGlobalStats(t *testing.T) {
-	stats := runtime.NewGlobalStats(createTestNodes())
+	stats := runtime.NewGlobalStats(createTestNodes(), "ffhb01")
 
 	assert := assert.New(t)
 	fields := GlobalStatsFields(stats)
 
 	// check fields
-	assert.EqualValues(3, fields["nodes"])
+	assert.EqualValues(2, fields["nodes"])
 }
 
 func createTestNodes() *runtime.Nodes {
@@ -32,6 +32,9 @@ func createTestNodes() *runtime.Nodes {
 			Hardware: data.Hardware{
 				Model: "TP-Link 841",
 			},
+			System: data.System{
+				SiteCode: "ffhb01",
+			},
 		},
 	}
 	nodeData.NodeInfo.Software.Firmware.Release = "2016.1.6+entenhausen1"
@@ -47,6 +50,9 @@ func createTestNodes() *runtime.Nodes {
 			Hardware: data.Hardware{
 				Model: "TP-Link 841",
 			},
+			System: data.System{
+				SiteCode: "ffhb01",
+			},
 		},
 	})
 
diff --git a/respond/collector.go b/respond/collector.go
index f6f5935..65b87ab 100644
--- a/respond/collector.go
+++ b/respond/collector.go
@@ -22,6 +22,7 @@ type Collector struct {
 	iface      string
 	db         database.Connection
 	nodes      *runtime.Nodes
+	sites      []string
 	interval   time.Duration // Interval for multicast packets
 	stop       chan interface{}
 }
@@ -207,6 +208,11 @@ func (coll *Collector) saveResponse(addr net.UDPAddr, res *data.ResponseData) {
 	// Process the data and update IP address
 	node := coll.nodes.Update(nodeID, res)
 	node.Address = addr.IP
+	if nodeinfo := node.Nodeinfo; nodeinfo != nil {
+		if len(nodeinfo.System.SiteCode) > 0 {
+			coll.sites = append(coll.sites, nodeinfo.System.SiteCode)
+		}
+	}
 
 	// Store statistics in InfluxDB
 	if coll.db != nil && node.Statistics != nil {
@@ -249,7 +255,8 @@ func (coll *Collector) globalStatsWorker() {
 
 // saves global statistics
 func (coll *Collector) saveGlobalStats() {
-	stats := runtime.NewGlobalStats(coll.nodes)
-
-	coll.db.AddStatistics(stats, time.Now())
+	for _, site := range coll.sites {
+		stats := runtime.NewGlobalStats(coll.nodes, site)
+		coll.db.AddStatistics(stats, time.Now())
+	}
 }
diff --git a/runtime/stats.go b/runtime/stats.go
index ec5bb64..04e1895 100644
--- a/runtime/stats.go
+++ b/runtime/stats.go
@@ -17,32 +17,33 @@ type GlobalStats struct {
 }
 
 //NewGlobalStats returns global statistics for InfluxDB
-func NewGlobalStats(nodes *Nodes) (result *GlobalStats) {
+func NewGlobalStats(nodes *Nodes, site string) (result *GlobalStats) {
 	result = &GlobalStats{
 		Firmwares: make(CounterMap),
 		Models:    make(CounterMap),
 	}
 
-	nodes.Lock()
 	for _, node := range nodes.List {
 		if node.Online {
-			result.Nodes++
-			if stats := node.Statistics; stats != nil {
-				result.Clients += stats.Clients.Total
-				result.ClientsWifi24 += stats.Clients.Wifi24
-				result.ClientsWifi5 += stats.Clients.Wifi5
-				result.ClientsWifi += stats.Clients.Wifi
-			}
-			if node.Gateway {
-				result.Gateways++
-			}
 			if info := node.Nodeinfo; info != nil {
-				result.Models.Increment(info.Hardware.Model)
-				result.Firmwares.Increment(info.Software.Firmware.Release)
+				if len(site) == 0 || info.System.SiteCode == site {
+					result.Nodes++
+					if stats := node.Statistics; stats != nil {
+						result.Clients += stats.Clients.Total
+						result.ClientsWifi24 += stats.Clients.Wifi24
+						result.ClientsWifi5 += stats.Clients.Wifi5
+						result.ClientsWifi += stats.Clients.Wifi
+					}
+					if node.Gateway {
+						result.Gateways++
+					}
+
+					result.Models.Increment(info.Hardware.Model)
+					result.Firmwares.Increment(info.Software.Firmware.Release)
+				}
 			}
 		}
 	}
-	nodes.Unlock()
 	return
 }
 
diff --git a/runtime/stats_test.go b/runtime/stats_test.go
index fd0bfcb..2be4bf0 100644
--- a/runtime/stats_test.go
+++ b/runtime/stats_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestGlobalStats(t *testing.T) {
-	stats := NewGlobalStats(createTestNodes())
+	stats := NewGlobalStats(createTestNodes(), "ffhb")
 
 	assert := assert.New(t)
 	assert.EqualValues(1, stats.Gateways)
@@ -39,6 +39,9 @@ func createTestNodes() *Nodes {
 			Hardware: data.Hardware{
 				Model: "TP-Link 841",
 			},
+			System: data.System{
+				SiteCode: "ffhb",
+			},
 		},
 	}
 	nodeData.NodeInfo.Software.Firmware.Release = "2016.1.6+entenhausen1"
@@ -54,6 +57,9 @@ func createTestNodes() *Nodes {
 			Hardware: data.Hardware{
 				Model: "TP-Link 841",
 			},
+			System: data.System{
+				SiteCode: "ffhb",
+			},
 		},
 	})
 
@@ -63,6 +69,9 @@ func createTestNodes() *Nodes {
 			Hardware: data.Hardware{
 				Model: "Xeon Multi-Core",
 			},
+			System: data.System{
+				SiteCode: "ffhb",
+			},
 		},
 	})