Petroski Natural Dying Corporation measures its activity it terms of skeins of yarn dyed. Last month, the budged level of activity was 19, 700 skeins and the actual level of activity was 19, 900 skeins. The company's owner budgets for dye cost, a variable cost, at $0.67 per skein. The actual dye cost last month was $13, 910. In the company's performance report for last month, what would have been the spending variance for dye costs