Zanny Electronics Company uses a standard cost system to collect costs related to the production of its water ski radios. The direct labor standard for each radio is 0.9 hours. The standard direct labor cost per hour is $7.20. During the month of August, Zanny's water ski radio production used 6,600 direct labor-hours at a total direct labor cost of $48,708. This resulted in production of 6,900 water ski radios for August. What is Zanny's labor rate variance for the month of August?