You can now use heatmaps to visulize latency for span and distribution-type metric charts in notebooks and dashboards.Heatmap

Heatmaps allow you to see the distribution of values over time. Unlike a line chart, you can see the number of data points for a particular value, at a particular point in time. Color saturation in the map represents the amount of data points - the darker the color, the more data points for that value, at the point in time.