> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/june5-3.7/en/webanwendung/fehlende-messwerte.md).

# Missing Measured Values

Under certain circumstances, certain measured values of a measured variable may not contain any values. In this case, the line connection across the missing measured values is not displayed. In the end, a measurement gap is created in the measurement curve at the corresponding points. Showing or hiding missing measured values is configurable. Please note that by default, measurement gaps are not displayed.

![Figure: Display/Setting of missing measured values](/files/quBEDZOHqJTGu4bVhwZX)

It should be noted that the time change has an effect on the display of line charts, regardless of the selected aggregation level. At the transition to daylight saving time, there can be time periods in which values cannot be delivered depending on the server time zone. In JUNE5, this is represented by a straight line in the charts.

![Figure: Effect of time change at the transition to daylight saving time](/files/Rnl7q9AUFZxe4OwZ54f3)

In contrast, at the transition to standard time, a given time period in which values are delivered twice for a timestamp from data sources is shown. In JUNE5, this is represented by two stacked line chart progressions.

![Figure: Effect of time change at the transition to standard time](/files/HjtI7k3n1y4pzQ1zRlxC)


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