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Interpolation Method
In the interpolation method, for the Influence Coefficient calculation the first step is to calculate the ‘m-Influence Factor’ and ‘n-Influence Factor’. In this case the value is 0.254 and 1.381 respectively
Next step is locating the data range in the table for ‘m' and 'n’. This can be seen in the highlighted section (red) in the table.
Once the range is identified, the table ranges for ‘n' and 'm' will be utilized to interpolate the exact value of Influence Coefficient. In this case the Ic value interpolated comes up to 0.29.
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Roundoff Method (previous method)
In the round off method, the first step is to calculate the ‘m-Influence Factor’ and ‘n-Influence Factor. In this case the value is 0.254 and 1.381 respectively.
Now the ‘m' and ‘n’ factors are rounded off to 1 dec digit. So the values in our case for ‘m’ and 'n’ will be 0.3 and 1.4.
This falls under the range of n=1.2/ n>1.2&&n<1.5 and m = 0.3
The corresponding Influence Coefficient in this case is 0.333
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