# Graph time series as lines
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This documentation topic is designed for Grafana workspaces that support **Grafana version 8.x**.  
For Grafana workspaces that support Grafana version 12.x, see [Working in Grafana version 12](using-grafana-v12.md).  
For Grafana workspaces that support Grafana version 10.x, see [Working in Grafana version 10](using-grafana-v10.md).  
For Grafana workspaces that support Grafana version 9.x, see [Working in Grafana version 9](using-grafana-v9.md).

This section explains how to use Time series field options to visualize time series data as lines and illustrates what the options do.

**Create the panel**

1. Create a panel, selecting the **Time series** visualization. For more information, see [Adding a panel](add-a-panel-to-a-dashboard.md).

1. In the **Panel editor**, choose **Field**.

1. In **Style**, choose **Lines**.

## Style the lines
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There are a variety of options for styling the lines.
+ **Line interpolation** – Choose how Grafana interpolates the series line. The choices are **Linear**, **Smooth**, **Step before**, and **Step after**.
+ **Line width** – Set the line thickness between 0 and 10 pixels.
+ **Fill opacity** – Set the opacity of the series fill, from 0 to 100 percent.
+ **Gradient mode** – Set the mode of the gradient fill. Fill gradient is based on the line color. To change the color, use the standard color scheme field option.

  Gradient appearance is influenced by the setting for **Fill opacity**.

  The choices for gradient fill are **None**, **Opacity**, and **Hue**. With **Opacity**, Transparency of the gradient is calculated based on the values on the y-axis. Opacity of the fill is increasing with the values on the y-axis. With **Hue**, the gradient color is generated based on the hue of the line color.
+ **Line style** – Set the style of the line. To change the color, use the standard color scheme field option.

  Line style appearance is influenced by the settings for **Line width** and **Fill opacity**.

  The choices for line style are **Solid**, **Dash**, and **Dots**.
+ **Null values** – Choose how gaps in the data are displayed. Null values can be connected to form a continuous line or, optionally, set a threshold above which gaps in the data should no longer be connected. You can choose to **Never** connect data points with gaps, **Always** connect data points with gaps, or set a **Threshold** at which gaps in the data should no longer be connected.
+ **Show points** – Choose when the points should be shown on the graph. The choices are **Auto**, **Always**, and **Never**.

## Fill below to
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This option is available only in the overrides tab.

**To fill the area between two series**

1. Select the fields to fill below.

1. In **Add override property**, choose **Fill below to**.

1. Select the series that you want the fill to stop at.