Extract the homework question from this image. State the question concisely (under 200 chars). Identify the academic subject.

Here is the information from the "4 HOUR CHART" image: This is a medical chart used for recording a patient's vital signs and other observations over time, typically every four hours, as indicated by the title. Header Information: Name: Date: Time: (Columns are marked with "2 6 10" repeating, likely representing 2 AM/PM, 6 AM/PM, 10 AM/PM for each day) Age: Sex: Ward: Hospital No.: Vital Signs and Observations Sections: 1. Temperature °C: The vertical axis ranges from 35 °C to 41 °C. A line indicates "Normal Body Temperature" (appears to be around 37 °C). Each major grid line represents 1 °C, and there are 5 subdivisions between major lines, meaning each small square represents 0.2 °C. 2. Pulse Rate: The vertical axis ranges from 20 to 160 beats per minute. Each major grid line represents 20 units, and there are 5 subdivisions between major lines, meaning each small square represents 4 beats per minute. 3. Respirations: The vertical axis ranges from 20 to 60 breaths per minute. Each major grid line represents 20 units, and there are 5 subdivisions between major lines, meaning each small square represents 4 breaths per minute. 4. Bowels: A section for recording bowel movements. 5. Urine: A section for recording urine output or characteristics. 6. Days of Disease: A section to track the duration of the patient's illness.