Hurren Corporation makes a product with the following standard costs:

Inputs	Standard Quantity or Hours	Standard Price or Rate	Standard Cost Per Unit
Direct materials	5.3 grams	$7.00 per gram	$37.10
Direct labor	0.8 hours	$18.00 per hour	$14.40
Variable overhead	0.8 hours	$7.00 per hour	$5.60

The company reported the following results concerning this product in June.

Originally budgeted output	5,700	units
Actual output	5,600	units
Raw materials used in production	28,470	grams
Actual direct labor-hours	4,400	hours
Purchases of raw materials	32,700	grams
Actual price of raw materials purchased	$7.10	per gram
Actual direct labor rate	$18.90	per hour
Actual variable overhead rate	$6.70	per hour

The company applies variable overhead on the basis of direct labor-hours. The direct materials price variance is computed when the materials are purchased.

The variable overhead rate variance for June is