The transit time forecasting results with P-DBM obtained via the ensemble approach (left). Histogram of the residuals , where represents the predicted transit time and T represents the true transit time. The histogram provides an overview of the distribution of the forecast errors. The legend in figure shows the mean value and standard deviation of the residuals obtained from four test folds. The mean value indicates the average bias of the predictions, while the standard deviation represents the spread or variability of the errors (right). Scatter-plot of the residuals for all the test CMEs, along with associated error bars derived via P-DBM. The vertical axis marks the CME number in the dataset. Each point on the scatter plot represents an individual CME.