Choose the Appropriate Data
High-Low charts are most effective when used with data that consists of two variables (high and low), such as stock prices or weather conditions. Ensure that the data you are using is suitable for this chart type or it is best to use another one like Area.
Use Clear Labeling
Make sure to label each axis clearly and concisely to help users understand the displayed data. This includes marking the x-axis (usually time) and the y-axis (usually values).
Use Color Coding or Shading
Consider using color coding to differentiate between different data sets or to highlight specific trends or changes over time.