An error line chart overlays vertical error bars on each point of a line series, making it easy to track trends while showing the uncertainty around each measurement. This combination is well suited for time-series data where variability matters.
This sample tracks monthly project work duration throughout 2015 in man-hours, ranging from about 31 in January to nearly 292 in December. Each data point carries asymmetric upper and lower error values that produce error bars of different lengths. A custom tooltip reports the exact man-hours along with minimum and maximum dispersion values. The hover mode is set to by-x, so moving across the chart highlights each monthly reading in sequence.
Follow the step-by-step Error Chart Tutorial to learn how such charts are built. See the Error Chart documentation for all configuration options.