Table 2 The number of hectares burned at different severity levels within the fire perimeter of each fire site in Montana, Idaho, and Washington, USA, that burned in July and August between 2003 and 2007, based on remotely sensed data. Percent area is reported in parentheses. Percentages do not always add up to 100% because of the sensor failure leading to striping and no-data returns for Landsat 7 images of the Cascade, East Zone, and Robert fires. The number of sites in each category are reported below the percent area in each class. Increased greenness is a remote sensing class identifying areas with more green vegetation after the fire than before the fire. These areas constitute less than 2% of any fire and were therefore not sampled

From: Does burn severity affect plant community diversity and composition in mixed conifer forests of the United States Intermountain West one decade post fire?