The horizontal axis gives elapsed time in days, from 0 to more than 5000. Artificial hydration appears in several periods from about 100 days to 4300 days. Testing F L 903 occurs during G T 1, G T 2, and G T 4. Testing F U 910 occurs during G T 3. Testing F C T occurs during G T 5. Decommissioning appears after G T 5. Breaks in data appear near 550 days and between about 4600 and 4900 days.