PV: Planned value, which is the budgeted cost of planned completion of activities or WBS component work before a given point in time.

AC: The actual cost is the actual total cost of completing the work in a given time period.

EAC: Complete the estimation and quantify the most probable total cost of the project according to the performance and risk of the project.

ETC: the completion needs to be estimated, and the remaining work is in the current estimation.

SV: schedule deviation, schedule deviation, formula SV = EV-PV.

CV: deviation of cost execution index, and the formula CV = EV-AC.

SPI: progress performance indicator, the ratio of earned value to planned value. It reflects the efficiency of the project team in using time.

CPI: Cost performance indicator, which refers to the ratio of budgeted expenses to actual expenses. . It reflects the efficiency of the project team in using funds.

Extended data:

When SV is positive, it means that the progress is ahead of schedule; When SV is equal to zero, it means that it is actually in line with the plan. When SV is negative, it means that the progress is delayed.

When CV is positive, the actual labor (or expenses) consumed is lower than the budgeted value, that is, there is a balance or high efficiency; When CV is equal to zero, actual labor (or expenses) and other budgeted values; When CV is negative, the actual labor (or expenses) consumed exceeds the budget value or overspend.