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U.S.C.&G.S. Pub 231 question...

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dave-karoly
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What is "d" across the top of the pages?

http://docs.lib.noaa.gov/rescue/cgs_specpubs/QB275U35no2311942.pdf


 
Posted : July 17, 2014 11:14 am
jlwahl
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Look like difference in consecutive values for use in interpolation. My first guess.

Jlw


 
Posted : July 17, 2014 11:43 am
Dave Ingram
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It is the incremental change for each value. Eliminates the need for step 1 (subtraction) when interpolating.


 
Posted : July 17, 2014 11:43 am