The histogram for the global time series includes the ensemble mean and all the ensemble members, both hindcasts and forecasts. A histogram is a graphical display of data using bars, each bar groups the variable values into ranges reported on the x-axis with related frequency of appearance on the y-axis. The tolerance (if available) and control limits are shown with dashed coloured vertical lines. A boxplot is shown at the bottom of the histogram. It shows the dispersion range estimation based on the Interquartile Range (IQR), the 1st and 3rd quartiles and the median. Histogram Min/Max values are indicated by dashed lines below the histogram (A schematic description of a boxplot is available at the bottom of this page). Note that these plots are interactive using the buttons at the top right.