Anybody else notice the typo in the first figure? The axis has 1940 where 1970 should be. Normally not noteworthy but funny to see 1940s twice on the x axis, an

Anybody else notice the typo in the first figure? The axis has 1940 where 1970 should be. Normally not noteworthy but funny to see 1940s twice on the x axis, and... how does this happen? Do people manually type their axis labels or something?