AP: The National Snow and Ice Data Center at the University of Colorado said sea ice coverage Friday was recorded at a summer low of 1.84 million square miles. The ice cover appeared to have reached its minimum extent for the year that day. The average September sea ice extent from 1979 to 2000 was 2.7 million square miles. This year’s coverage was 753,000 square miles fewer than that number. The record low for summer sea ice coverage — 1.65 million square miles — was set in …