From the graph it is apparent that it's not exactly 62 million years... it (whatever IT is) varies randomly, but there is an UP and a DOWN.A possible explanation:
“Comets could be perturbed from the Oort cloud by the periodic passage of the solar system through molecular clouds, Galactic arms, or some other structure with strong gravitational influence,” Muller said. “But there is no evidence even suggesting that such a structure exists.”
Muller also believes:
Physicist Richard A. Muller and others have postulated that the sun has a heretofore undetected companion star in an elliptical orbit beyond the Oort cloud ... which you can read about here
Now for the juice...
If you were to look at the definition of a yuga:
According to early Hindu mythology, the mahayuga or "great age" is a period of time consisting of four consecutive ages, lasting 1728000, 1296000, 864000 and 432000 years for a total of 4320000. They placed themselves and all of humanity in the fourth of these ages. Basically Brahma is breathing. see the numbers
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IF you've ever seen one of those books you find on pavements called 'Autobiography of a yogi'...
Well, the dude who was his guru, Sri Yukteswar also writes that our sun has a 'star for its dual', with an orbit around this star. As our sun moves through this orbit it takes the whole solar system closer to and then further from the "grand centre" of our solar system called 'Vishnunabhi', which is the seat of the creative power, 'Brahma', [which]...regulates...the mental virtue of the internal world." He states that the proximity to this grand centre determines which yuga it is. [see this and this] I'd conclude that:
Brahma is not crazy about meditation and controlled breathing... he breathes like you and me... unevenly.
The answer is either 43.2 or 62 ... unlikely that it is 42
