Bramble Co. produces wooden boxes. The company's standards per box require 5 boards, each costing $9 per board, and half of an hour of direct labour. The standard labour rate is $14 per hour. In August, Bramble Co. purchased 12070 boards for a total cost of $123600. It used 11530 boards to manufacture 1810 boxes. Total labour hours were 960 hours, and total labour costs were $16450. What was the total labour variance for August?