diff --git a/bot.go b/bot.go
index e48d923..90e9e02 100644
--- a/bot.go
+++ b/bot.go
@@ -110,8 +110,8 @@ func (b *Bot) BotHandlers() {
 	b.bot.Handle("/value", botGraphValue)
 	b.bot.Handle("/value_delta", botGraphValueDelta)
 	b.bot.Handle("/planes", botGraphPlanes)
-	b.bot.Handle("/busses", botGraphPlanes)
-	b.bot.Handle("/trains", botGraphPlanes)
+	b.bot.Handle("/busses", botGraphBusses)
+	b.bot.Handle("/trains", botGraphTrains)
 
 	b.bot.Handle(tb.OnPhoto, botPhoto)
 	b.bot.Handle(tb.OnChannelPost, botChannelPost)
@@ -984,6 +984,7 @@ func botGraphValue(m *tb.Message) {
 
 func botGraphValueDelta(m *tb.Message) {
 	var (
+		minZero    int
 		maxVal     float64
 		unitFactor float64
 		unitName   string
@@ -1008,6 +1009,9 @@ func botGraphValueDelta(m *tb.Message) {
 				vals[coID] = append(vals[coID], pt)
 			}
 			sort.Slice(vals[coID], func(i, j int) bool { return vals[coID][i].X < vals[coID][j].X })
+			if len(vals[coID]) > minZero {
+				minZero = len(vals[coID])
+			}
 		}
 	}
 
@@ -1017,9 +1021,21 @@ func botGraphValueDelta(m *tb.Message) {
 			if math.Abs(v[i].Y) > maxVal {
 				maxVal = math.Abs(v[i].Y)
 			}
+			if v[i].Y == 0 && i < minZero {
+				minZero = i
+			}
 		}
-		vals[coID] = v[1:]
+		vals[coID] = v
 	}
+	for coID, v := range vals {
+		if minZero > 1 {
+			vals[coID] = v[minZero:]
+		} else {
+			vals[coID] = v[1:]
+		}
+	}
+
+	logInfoDebug("botGraphValueDelta : removing leading %d values", minZero)
 
 	if maxVal > 1000000000 {
 		unitFactor = 1000000000
diff --git a/version.go b/version.go
index 476fa34..66f6694 100644
--- a/version.go
+++ b/version.go
@@ -1,6 +1,6 @@
 // Code generated by version.sh (@generated) DO NOT EDIT.
 package main
-var githash = "2a1bf10"
-var buildstamp = "2021-12-06_14:22:55"
-var commits = "235"
-var version = "2a1bf10-b235 - 2021-12-06_14:22:55"
+var githash = "456f174"
+var buildstamp = "2021-12-06_14:34:11"
+var commits = "236"
+var version = "456f174-b236 - 2021-12-06_14:34:11"