MH370 - locus of last known location

NYTimes: This map released by Malaysian officials shows two red lines representing the possible locations from which Flight 370 sent its last hourly transmission to a satellite at 8:11 a.m. on March 8, more than seven hours after it took off from Kuala Lumpur's airport, and when the plane would most likely have been running low on fuel. Credit Office of the Prime Minister of Malaysia