Please explain

Given a 12-month project, reporting status monthly. It is now the end of month 6. By month values for planned expenditures, actual cost expended, and the value received are listed in the table below. PV AC EV Month 1 30 28 27 Month 2 35 32 31 Month 3 45 43 40 Month 4 50 47 44 Month 5 55 49 49 Month 6 55 51 50 Month 7 55 Month 8 50 Month 9 50 Month 10 40 Month 11 20 Month 12 20 PV AC EV e) For each of the reporting periods, what was the planned value, actual cost, and earned value? Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 PV AC EV Month 7 Month 8 Month 9 Month 10 Month 11 Month 12 PV AC EV f) What is the schedule variance and cost variance at the end of each month? Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 CV SV Month 7 Month 8 Month 9 Month 10 Month 11 Month 12 CV SV g) What is the schedule performance index and cost performance index at the end of each month? Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 CPI SPI Month 7 Month 8 Month 9 Month Month 10 11 Month 12 CPI SPI