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Calculation problem

Question asked by peterba1 on Dec 15, 2015
Latest reply on Dec 16, 2015 by peterba1

I am trying to bring a calculation that works out the risk of Grass fires.


The original equation is as follows:



where B45 is Curing (how dry the grass is)

B44 is Wind Speed

B43 is Relative Humitity of the air

and B42 is Temperature.


The calculation I got was:


2*Exp(-23.6+(5.01*Ln(Curing)+.001)+(.0281*Temperature)-.266*Sqrt(Relative Humidity+.633*Sqrt(Wind Speed)))


The results are all wrong.  What is my mistake? 


Captain Peter Baxter