Class: Toji::Swvp::Sonntag

Inherits:
Object
  • Object
show all
Includes:
Singleton, Base
Defined in:
lib/toji/swvp/sonntag.rb

Overview

Sonntagの式

Constant Summary collapse

A = 
-6096.9385
B = 
21.2409642
C = 
2.711193 * 10**-2
D = 
1.673852 * 10**-5
E = 
2.433502

Instance Method Summary collapse

Instance Method Details

#calc(temp) ⇒ Object 



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18
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# File 'lib/toji/swvp/sonntag.rb', line 17

def calc(temp)
  temp = temp.to_f
  (Math.exp(A * ((temp + 273.15)**-1) + B - C * (temp + 273.15) + D * ((temp + 273.15)**2) + E * Math.log(temp + 273.15))) / 100 
end