Actual Duration field
The current total working time for the project, template, or EPS. For completed items, this field displays the total working time from the actual start date to the actual finish date. For items that are in-progress, this field displays the total working time from the actual start date to the data date.
At Completion Duration field
The total working time from the project current start date to the current finish date.
The current start date is the planned start date until the project is started, and then it is the actual start date. The current finish date is the planned finish date while the project is not started, the remaining finish date while the project is in progress, and the actual finish date once the project is completed.
BL Duration field
The planned duration for the activity in the primary baseline. Planned duration is the total working time from the activity current start date to the current finish date.
Calculated as Actual Duration plus Remaining Duration.
The total working time is calculated using the activity's calendar.
Planned Duration field
The total working time from the project planned start date to the planned finish date.
Remaining Duration field
The total working time from the project remaining start date to the remaining finish date.
Total Float field
The amount of time the activity can be delayed before risking a delay to the project finish date.
A float of zero hours indicates that the activity cannot be delayed at all and a negative float indicates that the project is already behind schedule. In a complex schedule, negative total float on some activities might not cause a delay to the project finish date.
Calculated as Late Start minus Early Start or as Late Finish minus Early Finish.
Variance - Duration field
The duration between the activity's baseline duration and the at complete duration.
Calculated as Baseline Duration minus At Completion Duration.
Variance - Finish Date field
The duration between the finish date in the current project and the baseline finish date.
Calculated as Finish Date minus Baseline Finish Date.
Variance - Start Date field
The duration between the start date in the current project and the baseline start date.
Calculated as Start Date minus Baseline Start Date.