The risk-free rate of interest for borrowing is 4.1% per annum with continuous compounding, and the corresponding risk-free rate for lending is 1% per annum lower. The dividend yield is 1.9% per annum. The current value of a stock index is 1,180. There are no other transactions costs involved in spot-futures arbitrage. What is the width of the no-arbitrage window for a futures contract with six months to maturity? Use one decimal place for your answer.