Average approval rating of US Presidents

Gallup looks at the average approval rating of US Presidents post WWII. They are:

1. Kennedy 70.1%
2. Eisenhower 65.0%
3. Bush GHW 60.9%
4. Clinton 55.1%
5. Johnson 55.1%
6. Reagan 52.8%
7. Bush GW 49.4%
8. Nixon 49.0%
9. Obama 47.9%
10. Ford 47.2%
11. Carter 45.5%
12. Truman 45.4%

So Obama on average was more unpopular than Bush 41 and Nixon!

To be fair to him, his ratings were more consistent. He was in the 40s for almost his entire presidency. Bush 41 and Nixon had periods of very high approvals and periods of very low approvals.