COPENHAGEN - Freight rates for shipping containers from Asia to northern Europe fell 0.9 percent to $231 per 20-foot container (TEU) in the week ended on Friday, one source with access to data from the Shanghai Containerized Freight Index told Reuters. It was the sixth consecutive week of falling freight rates on the world’s busiest route. Rates are at their lowest since June 19, and widely seen as being at loss-making levels. Denmark’s A.P. Moller-Maersk downgraded its profit outlook for 2015 on Friday and said the main reason was that the container shipping market deteriorated beyond management’s expectations, especially in the latter part of third quarter and October. The conglomerate owns Maersk Line, the world’s biggest container shipper with more than 600 container vessels.