Portfolio returns, in %, over the first six months of a year were 0.15, 0.61, 0.29, 0.35, 1.38, and -0.28. The benchmark returns over the same six months were 0.2, 0.63, -0.55, 0.5, 1.7, and 0.1, respectively. What is the portfolio's monthly (i.e., NOT annualized) information ratio over the period? (Round to the nearest 0.01. The formula is in Ch.25 on p.574.)