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I recall some time ago reading about... | Almanac.com

I recall some time ago reading about...

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I recall some time ago reading about a formula whereby you could tell the temperature by counting the chirps of a cricket. Can you tell me what that formula is?
To determine the outside temperature in degrees Fahrenheit, count the number of times a cricket chirps in precisely 15 seconds and then add 37. To get the temperature in degrees Celsius, count the number of chirps in 25 seconds, divide by 3, and then add 4.

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