Wadding Corporation applies manufacturing overhead to products on the basis of standard machine-hours. For the most recent month, the company based its budget on 4,400 machine-hours. Budgeted and actual overhead costs for the month appear below:

	Original Budget Based on 4,400 Machine-Hours-			Actual Costs
Variable overhead costs:
Supplies	$	11,640		$	12,630
Indirect labor		37,200			38,600
Fixed overhead costs:
Supervision		20,500			20,140
Utilities		6,700			6,650
Factory depreciation		7,700			8,010
Total overhead cost	$	83,740		$	86,030

The company actually worked 4,560 machine-hours during the month. The standard hours allowed for the actual output were 4,550 machine-hours for the month. What was the overall variable overhead efficiency variance for the month?