On the left of Table I, we present descriptive values of seven variables (lead time, time spent, etc.) that are related to the proposed visualizations. These variables were identified as important factors in customer interviews and thus were selected for statistical analysis. The amount of tasks varies between the rows of the table because all the variables were not available for all tasks. For instance, some of the tasks were still unfinished and therefore we do not have the lead time and the time estimate was not conducted for all the tasks.