diff --git a/src/pages/TelemetryView/Column.jsx b/src/pages/TelemetryView/Column.jsx
index b15042f..8b2ccf1 100644
--- a/src/pages/TelemetryView/Column.jsx
+++ b/src/pages/TelemetryView/Column.jsx
@@ -5,17 +5,13 @@ import {ChartTimeOnlineFooter} from './ChartTimeOnlineFooter';
 const stroke = (sz='1px', c='white') => ({ textShadow: `-${sz} -${sz} 0 ${c}, ${sz} -${sz} 0 ${c}, -${sz} ${sz} 0 ${c}, ${sz} ${sz} 0 ${c}` })
 
 export const Column = ({lineGroup, data, interval, showBorder, style, headerHeight}) => {
-  let dataLast = null
-  let pv = null
-  if (data?.length > 0) {
-    dataLast = data[data.length - 1];
-    pv = lineGroup.filter(line => line.showGraph).map(line => ({
-      color: line.color,
-      label: line.label,
-      unit: line.units,
-      value: dataLast[line.xAccessorName]
-    }))
-  }
+  let dataLast = data?.length > 0 ? data[data.length - 1] : null
+  let pv = lineGroup.filter(line => line.showGraph).map(line => ({
+    color: line.color,
+    label: line.label,
+    unit: line.units,
+    value: dataLast?.[line.xAccessorName]
+  }))
 
   return (
     <div style={style}>
@@ -27,7 +23,7 @@ export const Column = ({lineGroup, data, interval, showBorder, style, headerHeig
       <div style={{position: 'relative'}}>
         <Grid className={'display_chart_values'}>
           {pv?.map((v, idx) => (
-            <GridItem key={idx} col={1} row={idx} style={{...stroke(), color: v.color, padding: '0 4px'}}>{v.value.toFixed(2)} {v.unit}</GridItem>
+            <GridItem key={idx} col={1} row={idx} style={{...stroke(), color: v.color, padding: '0 4px'}}>{v.value?.toFixed(2) ?? '--'} {v.unit}</GridItem>
           ))}
         </Grid>
         <ChartTimeOnline
diff --git a/src/pages/TelemetryView/index.jsx b/src/pages/TelemetryView/index.jsx
index 51a568a..58f697d 100644
--- a/src/pages/TelemetryView/index.jsx
+++ b/src/pages/TelemetryView/index.jsx
@@ -43,7 +43,7 @@ const blockHeightGroup = [
     dash
   }, {
     label: 'Расход',
-    units: 'м³/ч',
+    units: 'л/c',
     xAccessorName: 'flow',
     yAccessorName: 'date',
     color: '#077',