By Samantha Hogan, The Maine Monitor, with data analysis by Agnel Philip, ProPublica The temperature hovered just above freezing as Officer Zachary Harmon drove his patrol car down the Route 1 bypass close to Maine’s border with New Hampshire. It was right after midnight on Feb. 25, 2012. A mix of snow and rain had fallen throughout the night, leaving the blacktop slick. Out of the dark ahead, Harmon