Comparing Obama's poll numbers at 100 days to those of other presidents

Here is an interesting article at the History News Network:

Gallup reports that 56% of the public believes that Obama is doing an excellent/good job. Gallup reported 62% approved of George W. Bush's job performance after the first 100 days. MSM tells us how popular Barack Obama is but the numbers tell a different story especially when used comparatively. Comparing the Gallup poll taken following the first 100 day of George W. Bush and Barack Obama is rather informative especially given the highly contentious nature of the 2000 election.

Here are the numbers for other presidents:

April approval ratings in first year in office
Bush now 62%
Clinton, 1993 55
Bush, 1989 58
Reagan, 1981 67
Carter, 1977 63
Nixon, 1969 61
Sampling error: +/-3% pts

See also how USA Today reports the Gallup poll here and how other polls compare here.