Accurate thermometer provided and used to evaluate temperature of TCS foods
In plain English
Food was not kept cold enough, hot enough, cooled fast enough, or cooked or reheated to the right temperature. Bacteria grow quickly in the "danger zone" between 41°F and 135°F, which makes this one of the most important food-safety checks.
Floors, walls, ceilings, lighting, ventilation, or garbage areas needed repair or cleaning. These are usually less urgent than food-handling problems but still need to be fixed.