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 $35 \text{ °C}$ to $41 \text{ °C}$.
   • A line indicates "Normal Body Temperature" (appears to be around $37 \text{ °C}$).
   • Each major grid line represents $1 \text{ °C}$, and there are 5 subdivisions between major lines, meaning each small square represents $0.2 \text{ °C}$.

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.