The table below shows the high and low temperatures in Houston, Texas, during a five-day period.
| Monday | Tuesday | Wednesday | Thursday | Friday | |
|---|---|---|---|---|---|
| High temperature | 70 | 60 | 65 | 72 | 78 |
| Low temperature | 50 | 40 | 45 | 52 | 58 |
What was the mean high temperature, in degrees Fahrenheit, during the five-day period?
68.5
69
69.5
70
