The phrase "to read off" means to recite or say something out loud, often in a formal or official setting. It can also refer to reading from a list or document, such as when someone is giving instructions and they ask others to "read off the names of those present." In some cases, it may also mean to extract information by scanning or interpreting data presented on a screen or paper, for example in a report that states: "The data was read off from the computer screen."