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 4,800 machine-hours. Budgeted and actual overhead costs for the month appear below:

	Original Budget Based on 4,800 Machine-Hours			Actual Costs
Variable overhead costs:
Supplies	$	12,000		$	13,030
Indirect labor		43,200			45,750
Fixed overhead costs:
Supervision		20,900			20,540
Utilities		7,100			7,090
Factory depreciation		8,100			8,410
Total overhead cost	$	91,300		$	94,820

The company actually worked 5,120 machine-hours during the month. The standard hours allowed for the actual output were 5,110 machine-hours for the month. What was the overall variable overhead efficiency variance for the month?